--- product_id: 367109931 title: "AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin)" brand: "kz" price: "£32.74" currency: GBP in_stock: true reviews_count: 13 category: "Kz" url: https://www.desertcart.co.uk/products/367109931-az09-bluetooth-5-2-ipv5-waterproof-noise-reduction-bluetooth-module store_origin: GB region: United Kingdom --- # IPV5 water-resistant design Bluetooth 5.2 stable low-latency 6h earhook battery life, 7x charging case AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) **Brand:** kz **Price:** £32.74 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your audio game—wireless freedom meets pro sound clarity! ## Quick Answers - **What is this?** AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) by kz - **How much does it cost?** £32.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/367109931-az09-bluetooth-5-2-ipv5-waterproof-noise-reduction-bluetooth-module) ## Best For - kz enthusiasts ## Why This Product - Trusted kz brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Game Mode Ready:** Activate ultra-low latency mode with a triple tap for flawless audio sync during intense gaming or video calls. - • **Pro-Grade Sound Clarity:** AAC advanced audio coding and hybrid drivers deliver crystal-clear, natural sound with professional noise isolation. - • **Seamless Wireless Freedom:** Transform your wired IEMs into sleek Bluetooth 5.2 earhooks with instant 2PIN plug-and-play convenience. - • **All-Day Power & Portability:** Enjoy up to 6 hours on a single charge plus 7 full recharges from the compact, magnetic charging case—stay unplugged longer. - • **Ergonomic Comfort Meets Durability:** Lightweight, ear-contoured design with oxygen-free copper silver-plated wiring ensures lossless audio and secure fit—even with glasses. ## Overview The KZ AZ09 Bluetooth 5.2 Upgrade Cable Ear Hook converts compatible wired IEMs into wireless earbuds featuring AAC codec support, IPV5 water resistance, and a robust 6-hour earhook battery life with a 7-charge portable case. Its ergonomic design and advanced RTL8753 chip ensure stable, low-latency connections ideal for professional use, gaming, and daily wear. ## Description Product description *This product is only a Bluetooth earhook, without earphones Bluetooth 5.2 chip, the connection is stable as wired Compared with the 5.0 version of the chip, the power consumption is lower, which brings longer battery life； pick up the automatic connection, automatic pairing; The sound quality is as clear as wired There is no delay in the sound effect of mobile game / chasing drama High performance mode，AAC transmission. The game experience is more shocking When you are ready to enter the game, press the button on the earhook three times to enter the high-performance game mode. The sound signal is transmitted faster. Compatible performance is strong, completely get rid of the shackles of wired The 5.2 Bluetooth chip is downward compatible, and it can be connected stably regardless of the IOS system or the Android system. The plug-in interface can be adapted to all C-pin headsets Dual-host dual-transmit mechanism, faster response Eliminates the traditional single host, dual-channel transmission, low latency, two earhooks can be connected to a mobile phone at the same time, can also be used separately Lightweight but full of energy, the charging compartment lasts for a long time The earhook battery capacity is 50mA, and the charging box battery capacity is 800mA. The earhook can be used for about 6-8 hours when fully charged, and the charging box can last 8-10 times. When the battery is low: the red indicator light flashes 4 times every 30 seconds. Fully charged: green light on Charging: red light is on Ergonomic design; use silver-plated wire The structure is optimized according to the contour of the outer ear, and the design is ergonomic. Reduce the weight, a single earhook weighs only 4.5g to improve wearing comfort. High-purity oxygen-free copper silver-plated wire is used inside the earhook to ensure the lossless transmission of audio signals. The details are controlled only to present a good product. Review: KZ AZ09 vs TRN-BT3S vs KZ HD gray BT adapter for IEMs - After ordering 2 different sets of IEM BT cable adapters from KZ (TRN BT3S and KZ HD gray cable) and I picked up the AZ09 against some of the reviews and was pleasantly surprised that 1) finally my callers could hear me properly. 2) it connected very fast like the KZ HD but I could use just one ear if I wanted and 3) the case is slick, magnetically grabbing them into position and charging them on the go. The led indicator is helpful and these finally let me wear my glasses much easier than the other two which I had to constantly trap the wire underneath the legs so they wouldn’t fall off. The BT3S were not bad mic wise but its not BT5.2 and connection was so so. Cutting in and out with a snapping audio cut everytime was irritating and replacing iphone clicking sounds with these annoying loud beeps sucked. Latency was terrible as well, had to re-pair them quite a few times to get them to sync up again. The KZ HD set was a good one and I hesitated returning them but the one main flaw was the length and arrangement of the wire. If they update the BT3S with the guts of the KZHD and shorten the cables a bit they would have a winner. Alas whenever I would take off the left one it would drag the mic and buttons to the back of my neck and that SUCKED. As a listening set it sounded great. I might say maybe better than the AZ09 by a bit. Louder and cleaner. By 5-10% Overall I am very satisfied with these AZ09. Sounds close to wired sound and I have them paired with KZ ZAX Metals in black which sound fantastic on them. Little bit of noise floor but tolerable for a day to day device. But they win all around. Definitely recommend them. Review: Works perfectly with decent volume!!! - I'm just trying this out now, straight from the packaging. It comes fully charged. I used a pair of cheap ZST in ears I got also off desertcart a few years ago to test them. Pairing and setup was as easy as it could possibly be! So the Bluetooth tech is good tech inside! The voice samples that tell you the device is on/paired/etc are REALLY poorly recorded, which gives you the impression that the audio quality won't be good. But that is not the case. But the actual audio quality is quite close to a cabled connection, the signal has enough drive to push out bass frequencies on the ZSTs I used. Frequency response seems to be pretty flat and true, with maybe a hump around the 1-1.5khz range but that might be the ZSTs. Triple tapping the earpiece will put the drivers into high performance mode which gives a small boost in volume. I'm going to use these in the gym today and I'll edit this review to provide the battery percentage. But so far, this is an incredible buy!!! ## Features - TWS high-definition Bluetooth upgrade earhooks, support AAC audio encoding transmission, professional sound quality comes from the dual protection of chip blessing and AAC advanced encoding capabilities. Adopt AAC advanced audio coding transmission technology to greatly improve the quality of hearing and bring natural and clear sound. - The earhook battery capacity is 50mA, the charging compartment battery capacity is 800mA, the earhook can be used for about 6 hours when it is fully charged, and the charging compartment can last 7 times. Small body, multiple core functions. - Using RTL8753 Bluetooth 5.2 chip, transmission is more stable, high-performance mode. Compared with the 5.0 version of the chip, the power consumption is lower and it brings longer battery life. 2PIN pluggable design, 0.75mm gold-plated pin, the earphone can be turned into a wireless earphone in seconds, getting rid of the wire shackles. - Ergonomic design. The structure is optimized according to the contour of the outer ear, and the design is ergonomic. Reduce weight and improve wearing comfort. High-purity oxygen-free copper silver-plated wire is used inside the earhook to ensure the lossless transmission of audio signals. - Eliminate conventional single host, dual-channel transmission, lower latency, two earhooks can be connected to the same mobile phone at the same time, earhooks can be used individually. When you are ready to enter the game, press the button on the earhook three times to enter the high-performance game mode. The sound signal is transmitted faster. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0988YNTBS | | Additional Features | water-resistant, wireless | | Age Range Description | Adult | | Audio Driver Type | Hybrid Driver | | Battery Average Life | 42 Hours | | Best Sellers Rank | #83,611 in Electronics ( See Top 100 in Electronics ) #848 in On-Ear Headphones #3,787 in Earbud & In-Ear Headphones | | Bluetooth Range | 10 Meters | | Bluetooth Version | 5.2 | | Brand | KZ | | Brand Name | KZ | | Cable Features | Without Cable | | Carrying Case Battery Average Life | 42 Hours | | Carrying Case Color | Black | | Carrying Case Weight | 50 Grams | | Color | AZ09-B,Black | | Compatible Devices | Bluetooth-enabled devices | | Connectivity Technology | bluetooth | | Control Method | Touch | | Customer Reviews | 4.0 out of 5 stars 541 Reviews | | Ear Placement | In Ear | | Earpiece Shape | Rounded Tip | | Enclosure Material | Copper | | Form Factor | On Ear | | Frequency Range | 20 Hz - 20,000 Hz | | Headphone Folding Features | On Ear | | Headphone Jack | No Jack | | Headphones Ear Placement | In Ear | | Headphones Jack | No Jack | | Is Autographed | No | | Item Weight | 55 Grams | | Manufacturer | yuanze | | Model Name | AZ09 | | Model Number | AZ09-B | | Noise Control | Sound Isolation | | Number of Items | 1 | | Specific Uses For Product | Professional | | Unit Count | 1 Count | | Water Resistance Level | Water Resistant | | Wireless Technology | Bluetooth | ## Product Details - **Brand:** KZ - **Color:** AZ09-B,Black - **Ear Placement:** In Ear - **Form Factor:** On Ear - **Noise Control:** Sound Isolation ## Images ![AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Image 1](https://m.media-amazon.com/images/I/61fi487555L.jpg) ![AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Image 2](https://m.media-amazon.com/images/I/61TvblKCoPL.jpg) ![AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Image 3](https://m.media-amazon.com/images/I/61WAt60xWGL.jpg) ![AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Image 4](https://m.media-amazon.com/images/I/61PfmI4ATYL.jpg) ![AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Image 5](https://m.media-amazon.com/images/I/61BrCu4qqOL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: What is the difference between the B pin and C pin models?** A: B pin: compatible with KZ-ZST/ZS10/ES4/ZSR , C pin: compatible with KZ-ZSN/ZS10PRO/ZSX **Q: Are these only 2 pin or also mcmx? C pin option shows 2 pin still** A: They currently do not offer MMCX. They have talked about it and if and when they do I will purchase 2 sets. I have 3 of the 2 pin versions and they work great! **Q: my headphones stopped playing in both ears after a few months no matter what device im using, is there a way to fix it or something?** A: Have you tried resetting , resetting gives your headset and devices a refresh. If that's dosen't work replace them they are under warranty. **Q: How long is the battery for kz az09 supose to last if connect to a kz zsn pro or similar?** A: Sorry for late reply ,it can last 6-8 hours , it can contect to KZ zsn pro ,it is available for type C KZ products ZSX/ZSN/ZSNPRO/ZSN PROX/ZS10PRO/AS12/AS16 .not available for type B KZ PRODUCTS ZST/ZST X/ZS10/AS06/AS10/BA10/ZSR/ES4 ,hope it help you ## Customer Reviews ### ⭐⭐⭐⭐⭐ KZ AZ09 vs TRN-BT3S vs KZ HD gray BT adapter for IEMs *by O***S on July 27, 2021* After ordering 2 different sets of IEM BT cable adapters from KZ (TRN BT3S and KZ HD gray cable) and I picked up the AZ09 against some of the reviews and was pleasantly surprised that 1) finally my callers could hear me properly. 2) it connected very fast like the KZ HD but I could use just one ear if I wanted and 3) the case is slick, magnetically grabbing them into position and charging them on the go. The led indicator is helpful and these finally let me wear my glasses much easier than the other two which I had to constantly trap the wire underneath the legs so they wouldn’t fall off. The BT3S were not bad mic wise but its not BT5.2 and connection was so so. Cutting in and out with a snapping audio cut everytime was irritating and replacing iphone clicking sounds with these annoying loud beeps sucked. Latency was terrible as well, had to re-pair them quite a few times to get them to sync up again. The KZ HD set was a good one and I hesitated returning them but the one main flaw was the length and arrangement of the wire. If they update the BT3S with the guts of the KZHD and shorten the cables a bit they would have a winner. Alas whenever I would take off the left one it would drag the mic and buttons to the back of my neck and that SUCKED. As a listening set it sounded great. I might say maybe better than the AZ09 by a bit. Louder and cleaner. By 5-10% Overall I am very satisfied with these AZ09. Sounds close to wired sound and I have them paired with KZ ZAX Metals in black which sound fantastic on them. Little bit of noise floor but tolerable for a day to day device. But they win all around. Definitely recommend them. ### ⭐⭐⭐⭐⭐ Works perfectly with decent volume!!! *by A***W on April 12, 2025* I'm just trying this out now, straight from the packaging. It comes fully charged. I used a pair of cheap ZST in ears I got also off Amazon a few years ago to test them. Pairing and setup was as easy as it could possibly be! So the Bluetooth tech is good tech inside! The voice samples that tell you the device is on/paired/etc are REALLY poorly recorded, which gives you the impression that the audio quality won't be good. But that is not the case. But the actual audio quality is quite close to a cabled connection, the signal has enough drive to push out bass frequencies on the ZSTs I used. Frequency response seems to be pretty flat and true, with maybe a hump around the 1-1.5khz range but that might be the ZSTs. Triple tapping the earpiece will put the drivers into high performance mode which gives a small boost in volume. I'm going to use these in the gym today and I'll edit this review to provide the battery percentage. But so far, this is an incredible buy!!! ### ⭐⭐⭐⭐ Fantastic addition to a so far fantastic pair of IEMs *by C***B on December 31, 2021* I bought KZ ZS10 Pro's a while back, and have been loving them since, and decided to go ahead and try this bluetooth set for them. I figured at the price point, even if it didn't work right or was just unpleasant to use, I wouldn't even be that upset. That said, I absolutely love them, instead of meeting expectations, they blew them away, and I've been super happy with them in almost every way. Also sorry this is so long.... Small side note, the cons list is *not* longer, it's just more specific because I kind of had to nitpick a little bit, I genuinely don't have much bad to say about these personally, the star rating should speak for itself. TL;DR - If you want these for your pair of KZ IEMs, just get them. Do it. Pros - Sound quality - Obviously when paired with a set of IEMs that sounds good, I didn't notice any real quality degradation. My ZS10's sound just like I expect, and that's exactly what I wanted - Comfort - I wear these for 10 hour shifts at work, one ear at a time, swapping at lunch, and they haven't been uncomfortable yet - Battery Life - They will last well past 6 hours of continuous use, when I make my swap at lunch, I've been at around 40% life, and that's 5.75 hours into my shift - Connectivity - As of yet, I've not seen them even hesitate to connect to my phone, I open the case and I hear the little voice say "Connected", seamless and super fast - Build quality - While the case will be mentioned later, the bluetooth bits themselves are awesome, they're solid, the buttons are well placed, and I'm not nervous at all that they're going to fall apart or break on me - The Case's Function - The case genuinely belongs in both the pros and cons, it's here in the pros because it does have a USB C charger (that it comes with, a cable at least), it has never had an issue with actually holding the modules to charge, and it has a foam bit in it to hold the IEMs in their well safely. It's well thought out, and I think it does its job great - Buttons - There's physical buttons. You can't press them accidentally, you won't double tap if you didn't mean to, they *can* be pressed with just one finger, they're leaps and bounds above dealing with touch sensors. Yes it's technically a "moving part to break" but they seem robust and they're pleasantly tactile - Value - While these obviously aren't capable of producing sound by themselves, even including the price of these in conjunction with the ZS10 Pro's, I spent around $75, which puts them at about half the price of the (original) Galaxy Buds I'd been using, and I like them so much more in terms of comfort, sound quality, and the fact that there's no touch sensors - Call Quality - They are described to me as "7/10" and "about what should be expected from a good quality pair of true wireless earbuds", and I consider that beyond good enough for the price Cons - The Case's Build Quality - To be fair, I don't think it's *that* bad, and it seems sturdy enough, but the hinge is a little flimsy when open. It also is a little chunky, but considering the size of the modules+IEMs, that's not surprising(and not that bad) - Button function - While I like that there's no companion app, it's a little unfortunate that you can't change what the buttons do - For example, I'd like a double click on *either* side to do "Next Song", but double clicking the left side's button does "Previous" instead, which I almost never want. (This is a minor complaint for me though, I do have a smartwatch that I can use to control media anyway) - Where the IEMs connect - Again, this isn't a huge issue, but I did cut away a tiiiiny bit of the plastic around the connector that connects to the IEM, it doesn't quite fit around the IEM's connector, and feels like it should push all the way in, but there's like another 0.5-1mm of length on the contacts. It felt fine how it was, and I'm sure it would have been, it was holding just fine before I modified them, but I feel cutting away a tiny bit of that plastic surround made a bit of a better connection - If you have a smaller ear, or the original cable that comes with specifically the ZS10 Pro's(potentially others, I've only ever had these ZS10's ) doesn't fit you well, these bluetooth bits may not be the best fit. They fit me *perfectly*, but the original ZS10 cable does as well, so that may be something to consider if you know your ears are smaller than average - ANC/Ambient Modes - I don't think there's any ANC or Ambient modes, or if there are I haven't figured out how to get them active. This is *not* a con to me, those aren't features I want, but I figured it's worth a mention ## Frequently Bought Together - KZ AZ09 Bluetooth 5.2 IPV5 Waterproof Noise Reduction Bluetooth Module Upgrade Cable Ear Hook for ZST/ZSTX/ZS10/AS06/AS10/BA10/ZSR/ES4(B pin) - Linsoul KZ ZS10 Pro, 4BA+1DD 5 Driver in Ear Monitor, HiFi Wired Earbuds, Gaming Earbuds, Hybrid IEM Earphones with Stainless Steel Faceplate, Detachable Cable for Musician(Without Mic, Dark Black) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/367109931-az09-bluetooth-5-2-ipv5-waterproof-noise-reduction-bluetooth-module](https://www.desertcart.co.uk/products/367109931-az09-bluetooth-5-2-ipv5-waterproof-noise-reduction-bluetooth-module) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-27*