--- product_id: 2866268 title: "Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey" brand: "master lock" price: "Β£30.94" currency: GBP in_stock: true category: "Master Lock" url: https://www.desertcart.co.uk/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination store_origin: GB region: United Kingdom --- # water-resistant foam earbud/charging port 4-digit combo lock Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey **Brand:** master lock **Price:** Β£30.94 **Availability:** βœ… In Stock ## Summary > πŸ” Travel smart, lock tight, live worry-free. ## Quick Answers - **What is this?** Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey by master lock - **How much does it cost?** Β£30.94 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/2866268-master-lock-portable-small-lock-box-set-your-own-combination) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Secure Attachment:** Includes a cable to lock your safe to fixed objects, preventing theft. - β€’ **On-the-Go Protection:** Compact and portable design fits seamlessly into your travel lifestyle. - β€’ **Customizable Security:** Set your own 4-digit combination for personalized protection. - β€’ **Device-Friendly Access:** Earbud and charging cable port lets you stay connected while locked up. - β€’ **Durable & Water-Resistant:** Shock-absorbing foam and water resistance safeguard your valuables anywhere. ## Overview The Master Lock 5900D Portable Small Lock Box offers a customizable 4-digit combination lock, water-resistant shock-absorbing foam construction, and a secure cable for fixed-object attachment. Designed for travel and personal use, it protects smartphones, passports, cash, and cards while allowing device charging through a dedicated port. Compact and durable, it’s a trusted security solution backed by a limited lifetime warranty. ## Description The Master Lock 5900D Set Your Own Combination Portable Personal Safe features durable construction made to withstand abuse and is water resistant. The safe measures 2-1/5in (57mm) H x 9-2/5in (23.9cm) W x 5-1/10in (13.1cm) D; and is ideal for recreation, campus, office, travel or leisure use. The safe includes a cable to wrap securely around a fixed object or use as a carrying handle. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust. ## Features - Small safe is ideal for use as a travel safe or personal safe for protection and security from theft - Secure small safe to a fixed object with cable; Portable safe is best used to protect smart phones, passports, cash, and credit cards - Set your own four-digit combination portable safe; Ear bud/charging cable access port to conveniently listen to music or charge devices while locked - Constructed with a shock absorbing foam, small lock box is designed to be water-resistant - Exterior dimensions: 2-1/4 inch H x 9-17/32 inch W x 4-59/64 D; Interior dimensions: 1-1/4 inch H x 8-1/8 inch W x 3-1/2 inch D ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005K6JQXQ | | Additional Features | Portable | | Alarm | Audible | | Best Sellers Rank | #1,447 in Office Products ( See Top 100 in Office Products ) #3 in Security Lock Boxes | | Brand | Master Lock | | Brand Name | Master Lock | | Capacity | 0.08 cubic feet | | Chamber Depth | 3.5 Inches | | Chamber Height | 1 Inches | | Chamber Width | 8.13 Inches | | Color | Gunmetal Grey | | Control Type | Touchpad Control | | Customer Reviews | 4.3 out of 5 stars 17,980 Reviews | | Global Trade Identification Number | 00071649147784 | | Included Components | 1 | | Item Dimensions D x W x H | 3.5"D x 9.31"W x 2.25"H | | Item Type Name | Set Your Own Combination Portable Safe | | Item Weight | 0.71 Kilograms | | Lock Type | Combination | | Manufacturer | Master Lock | | Manufacturer Part Number | 5900D | | Manufacturer Warranty Description | One year limited warranty | | Material | Multi | | Material Type | Multi | | Model Number | 5900D | | Mounting Type | Freestanding | | Product Dimensions | 3.5"D x 9.31"W x 2.25"H | | Smart Home Compatibility | Not Smart Home Compatible | | UPC | 071649147784 | | Unit Count | 1.0 Count | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Master Lock - **Capacity:** 0.08 cubic feet - **Color:** Gunmetal Grey - **Included Components:** 1 - **Item Weight:** 0.71 Kilograms - **Lock Type:** Combination - **Material:** Multi - **Mounting Type:** Freestanding - **Product Dimensions:** 3.5"D x 9.31"W x 2.25"H - **Special Feature:** Portable ## Images ![Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey - Image 1](https://m.media-amazon.com/images/I/717DzkodA8L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Would this hold about 10,000 cash. All one hundred bills?** A: Forget the 10,000 how much monopoly money can it hold i don't want my family stealing from me when i go to the bathroom **Q: What are interior dimensions? Wondering if it would fit an ipad mini and kindle?** A: No, it certainly would not hold a Kindle. I can close it with my car/house keys, my passport, my billfold and my Droid Razr cell phone inside, and maybe a couple of Krugerrands; that's about all. I just made some detailed measurements, and here's what I found:Height (maximum) 1.5", (minimum)1.0"Width at maximum height, 2.75"; at 1.0" height, 3.25""The ends are round and semi-circular; it could hold a narrow object 8.5" long, but the largest rectangular object would be about 6" long, 3" high, and 1" deep - roughly the size of a personal checkbook. I know this is a lot of answer. I hope it helps you, and anyone else who needs to know its inside dimensions. **Q: Is the interior deep enough for 2 or 3 regular size prescription pill bottles?** A: I just went and tried my prescription bottle in it and it fit. My bottle is about 1.5-2 inches around and about 4 inches tall. You could fit about 4 of them in there. I hope this helps. **Q: This is only waterproof, not fireproof or resistant?** A: No small case like this, made out of anything, is fire resistant. small boxes have too little thermal inertia ie too much thermal transmission to be rated as fire proof or fire resistance. Anyone saying anything this size is fireproof is lying. ## Frequently Bought Together - Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, β€Ž5900D, Gunmetal Grey - Apple AirTag 4 Pack --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination](https://www.desertcart.co.uk/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-19*