--- product_id: 296786674 title: "4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip" brand: "seafard" price: "£84.20" currency: GBP in_stock: false reviews_count: 5 url: https://www.desertcart.co.uk/products/296786674-4ft-red-scuba-diving-open-bottom-surface-marker-buoy-smb store_origin: GB region: United Kingdom --- # 4ft Neon Red High-Visibility SMB 49ft Braided Nylon Dive Line 210D Nylon + TPU Rupture-Resistant Fabric 4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip **Brand:** seafard **Price:** £84.20 **Availability:** ❌ Out of Stock ## Summary > 🛟 Dive Boldly, Surface Brightly — Your Ultimate Visibility Partner! ## Quick Answers - **What is this?** 4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip by seafard - **How much does it cost?** £84.20 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/296786674-4ft-red-scuba-diving-open-bottom-surface-marker-buoy-smb) ## Best For - seafard enthusiasts ## Why This Product - Trusted seafard brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Inflate Your Way:** Versatile inflation options—oral, regulator, or BC hose—make deployment effortless no matter your dive style. - • **Compact Powerhouse:** Lightweight 360g design perfect for cave, wreck, and travel diving—carry less, dive more, and never compromise on safety. - • **Stay Seen, Stay Safe:** Neon red 4ft SMB with reflective bands ensures you're visible from afar, reducing dive risks and boosting your underwater confidence. - • **Built to Brave the Depths:** Durable 210D nylon with TPU coating and overpressure relief valve means your SMB withstands harsh water conditions without fail. - • **Precision Control with Every Line:** Corrosion-resistant aluminum finger spool with 49ft braided nylon line and stainless steel bolt clip offers smooth, reliable reel management. ## Overview This 4ft neon red surface marker buoy (SMB) kit from Seafard combines high-visibility design with rugged 210D nylon and TPU construction for rupture resistance. Featuring a versatile inflation system and a corrosion-resistant aluminum alloy finger spool with 49ft braided nylon line and stainless steel bolt clip, it’s engineered for professional divers seeking reliable, compact, and easy-to-use surface signaling gear for cave, wreck, and open water adventures. ## Description Description: Scuba diving surface marker buoy SMB kit with dive reel finger spool and 15m line, double ended bolt snap clip safety gear equipment High visibility inflatable surface marking buoy signal tube with reflective tape makes sure scuba divers can be seen in open ocean SMB can be filled using the oral inflator, or through the use of an inflator at the bottom, you can also use a standard BC hose to inflate Built-in over pressure relief valve allows the tube to ascend without rupturing Great accessories for cave and wreck diving, scuba diving, diver, snorkeling, spearfishing and other underwater activities Specification:Scuba Diving Surface Marker Buoy Material: Nylon, TPU Color:Blue Length: Approx. 120 cm/4 ft Width: Approx. 17.8 cm/7 inch Color: redDive Reel Material: Aluminum alloy + 316 stainless steel Reel Diameter: Approx. 5.5 cm/2.2 inch Reel Thickness: Approx. 3.5 cm/1.4 inch Center Hole Diameter: Approx. 2.5 cm/1 inch Line Length: Approx. 15 m/49 ft Line Thickness: Approx. 2 mm/0.08 inch Bolt Snap Length: Approx. 9 cm/3.54 inch Package Includes: 1 Piece Scuba Diving Surface Marker Buoy 1 Piece Dive Reel Note: Please allow a slight difference due to manual measurement. Color may be slightly different from different monitors. Thanks! Review: Very decent DSMB Pros: multiple ways to inflate (mouth, inflator hose, regulator). Reflective tape on top. Heavy duty material and construction. Aluminum finger spool. Stainless swivel. Purge valve. 60ft of line. Stanless d ring attachment. Velcro and bungee keeps it securely rolled up. Cons: spool is small for 60ft of line making it difficult to get clip through holes (I cut 10ft off which helped resolve the issue). Loop to attach to smb d ring is on the small side but workable. A bit on the bulky side. Takes a number of breaths to inflate (easier to do with regulator). Overall very satisfied with this DSMB for the price point. Review: La boya es buenísima. Funciona perfecto. El carrete es más pequeño de lo que me hubiera gustado y el cordel utilizado no me gusto (por ser plano y se riza con extrema facilidad) ## Features - HIGH VISIBILITY DESIGN - The Neon Red surface marker signal tube is a 4ft surface marker with a Reflective Band tape on both sides for maximum visibility. - EASY FILL & STABILITY - SMB (total weight 360 grams) can be filled using the oral inflator, or through the use of a regulator in the open bottom of the SMB. - RUPTURE RESISTANT - Made from a 210D Nylon Fabric with a TPU coating for added strength in all water conditions and a built-in over pressure relief valve allows the tube to ascend without rupturing. - SMB FINGER SPOOL - Strong and corrosion resistant aluminum metal finger spool dive reel with 49ft of braided nylon line and stainless steel double ended bolt clip. - LIGHTWEIGHT & COMPACT - The combination ideal for cave and wreck diving, scuba diving, travelling diver, snorkeling, photography and other underwater activities. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07V1FSSL3 | | Batteries Included | No | | Brand | Seafard | | Colour | 4ft Orange Smb+blue Reel | | Customer Reviews | 4.3 4.3 out of 5 stars (238) | | Date First Available | 24 November 2019 | | Included Components | Seafard | | Item Diameter | 7 Inches | | Item Weight | 360 g | | Manufacturer | Seafard | | Material | Nylon | | Material Type | Nylon | | Number of Items | 1 | | Operation Mode | Manual | | Size | 4ft SMB 49ft Reel | | Style | diving | | UPC | 725691765426 | ## Product Details - **Brand:** Seafard - **Colour:** 4ft Orange Smb+blue Reel - **Item dimensions L x W x H:** 121.9 x 15 x 1 Centimeters - **Material:** Nylon - **Style:** diving ## Images ![4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip - Image 1](https://m.media-amazon.com/images/I/41K4RepWSlL.jpg) ![4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip - Image 2](https://m.media-amazon.com/images/I/41RnUEve1HL.jpg) ![4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip - Image 3](https://m.media-amazon.com/images/I/510f4DrUm3L.jpg) ![4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip - Image 4](https://m.media-amazon.com/images/I/51FJVMMlNxL.jpg) ![4ft Red Scuba Diving Open Bottom Surface Marker Buoy (SMB) with 49ft Finger Spool Alloy Dive Reel and Double Ended Bolt Clip - Image 5](https://m.media-amazon.com/images/I/51VYobvRReL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***K on 19 October 2020* Very decent DSMB Pros: multiple ways to inflate (mouth, inflator hose, regulator). Reflective tape on top. Heavy duty material and construction. Aluminum finger spool. Stainless swivel. Purge valve. 60ft of line. Stanless d ring attachment. Velcro and bungee keeps it securely rolled up. Cons: spool is small for 60ft of line making it difficult to get clip through holes (I cut 10ft off which helped resolve the issue). Loop to attach to smb d ring is on the small side but workable. A bit on the bulky side. Takes a number of breaths to inflate (easier to do with regulator). Overall very satisfied with this DSMB for the price point. ### ⭐⭐⭐⭐ Review *by K***N on 1 August 2022* La boya es buenísima. Funciona perfecto. El carrete es más pequeño de lo que me hubiera gustado y el cordel utilizado no me gusto (por ser plano y se riza con extrema facilidad) ### ⭐⭐⭐⭐⭐ Review *by S***A on 28 April 2020* Exactement ce que j'avais commandé. Reste plus qu'à l'essayer dans l'eau. --- ## 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/296786674-4ft-red-scuba-diving-open-bottom-surface-marker-buoy-smb](https://www.desertcart.co.uk/products/296786674-4ft-red-scuba-diving-open-bottom-surface-marker-buoy-smb) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*