--- product_id: 197177774 title: "CB03 20mm Watch Strap Curved End Rubber Band Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc" price: "18524 som" currency: KGS in_stock: true reviews_count: 12 url: https://www.desertcart.kg/products/197177774-cb03-20mm-watch-strap-curved-end-rubber-band-replacement-seiko store_origin: KG region: Kyrgyzstan --- # 20mm lug width perfect fit Adjustable length 145mm total Pure vulcanized rubber, oil & acid resistant CB03 20mm Watch Strap Curved End Rubber Band Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc **Price:** 18524 som **Availability:** ✅ In Stock ## Summary > ⌚ Elevate your MarineMaster game with the ultimate rubber strap upgrade! ## Quick Answers - **What is this?** CB03 20mm Watch Strap Curved End Rubber Band Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc - **How much does it cost?** 18524 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/197177774-cb03-20mm-watch-strap-curved-end-rubber-band-replacement-seiko) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Customizable Length:** Dual strap lengths (90mm + 55mm) with easy adjustment for perfect wrist fit. - • **Durable Vulcanized Rubber:** Superior strength and resistance to oils and acids for everyday rugged use. - • **Comfort Meets Sporty Style:** Thick yet flexible strap transforms your watch into a sleek, sporty statement piece. - • **Original Buckle Compatible:** Use your existing buckle for a hassle-free upgrade without extra cost. - • **Precision Fit for Seiko MM300:** Curved end design ensures seamless integration with iconic MarineMaster models. ## Overview The Crafter Blue CB03 is a 20mm curved end rubber watch strap designed specifically for Seiko MM300 MarineMaster models. Made from pure vulcanized rubber, it offers enhanced durability and resistance to oils and acids, ensuring long-lasting performance. With a total length of 145mm and a thickness tapering from 4.5mm to 3.5mm, it provides a comfortable, sporty fit that perfectly complements your watch’s iconic design. Note: buckle not included, compatible with original buckles. ## Description CRAFTER BLUE Re-define your style again CRAFTER BLUE 22mm Visit the Store CRAFTER BLUE 22mm Visit the Store High-end rubber straps Visit the Store High-end rubber straps rubber watch band replacement Visit the Store rubber watch band replacement Replacement rubber strap Visit the Store Replacement rubber strap CRAFTER BLUE 20mm rubber strap Visit the Store CRAFTER BLUE 20mm rubber strap RR01 20mm Curved Watch Endlinks Compatible with Rolex RR01 20mm Curved Watch Endlinks Compatible with Rolex CS001 The One and Best Rubber Case designed exclusively for Rolex watch protection CS001 The One and Best Rubber Case designed exclusively for Rolex watch protection AFMH200-1 Hydromatic 200m/660ft Diver Watch Professional Automatic Men's Sport Watch AFMH200-1 Hydromatic 200m/660ft Diver Watch Professional Automatic Men's Sport Watch CRAFTER BLUE WATCHES AND PREMIUM ACCESSORIES ARE MADE FROM THE WORLD’S FINEST MATERIALS. BUY THE BEST MEN’S LUXURY AND DIVE WATCHES ONLINE TODAY. For the Conscientious Collectors Built for the vigilant, our products protect your prized possession day and night, ensuring it stays in mint condition for many years to come. From revolutionary storage cases to wearable rubber straps, we will protect your watch at all costs. CRAFTER BLUE WATCHES AND PREMIUM ACCESSORIES ARE MADE FROM THE WORLD’S FINEST MATERIALS. BUY THE BEST MEN’S LUXURY AND DIVE WATCHES ONLINE TODAY. For the Conscientious Collectors Built for the vigilant, our products protect your prized possession day and night, ensuring it stays in mint condition for many years to come. From revolutionary storage cases to wearable rubber straps, we will protect your watch at all costs. What makes our products unique? Hand-crafted in Hong Kong, CRAFTER BLUE makes some of the finest luxury watches for men and watches accessories for men in the world. Our customers love the revolutionary design and modern look of our fashion men’s watches. What kind of products we provide? Men’s luxury watches Rubber Straps for Rolex, Tudor & Seiko Best Rubber Case for Rolex Protection Why do we love what we do? Here at CRAFTER BLUE our luxury watches are designed to help you live a life where the adventure never ends. Our mission is to make the world’s most functional and stylish watches for men. What makes our products unique? Hand-crafted in Hong Kong, CRAFTER BLUE makes some of the finest luxury watches for men and watches accessories for men in the world. Our customers love the revolutionary design and modern look of our fashion men’s watches. What kind of products we provide? Men’s luxury watches Rubber Straps for Rolex, Tudor & Seiko Best Rubber Case for Rolex Protection Why do we love what we do? Here at CRAFTER BLUE our luxury watches are designed to help you live a life where the adventure never ends. Our mission is to make the world’s most functional and stylish watches for men. ## Features - CRAFTER BLUE CB03 20mm curved end watch strap replacement watch band for Seiko MM300 - 20mm rubber watch strap compatible with Seiko MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021 (SLA019J1) and SBDX023 (SLA021J1), SBDX025, SLA023J1 - Lug width: 20mm; Buckle size: 18mm; Note: Buckle is NOT included, please use your original buckle. - The NBR CRAFTER BLUE rubber strap is made of pure vulcanized rubber which has superior strength and more resistant than natural rubber to oils and acids - Overall Length: 90mm + 55mm (Strap length:145mm / 5.71"); Thickness: Approx. 4.5mm - 3.5mm; Spring bar hole dia.: 2.50mm ## Technical Specifications | Specification | Value | |---------------|-------| | Clasp type | Tang Buckle | | Item type name | Watch strap | | Material | Nbr rubber | | Metal type | No Metal Type | ## Images ![CB03 20mm Watch Strap Curved End Rubber Band Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc - Image 1](https://m.media-amazon.com/images/I/51umK-3YAOL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***C on January 24, 2026* ### ⭐ Review *by C***B on January 28, 2026* ### ⭐⭐⭐⭐⭐ Review *by J***E on July 4, 2022* ## Frequently Bought Together - Crafter Blue CB03 Curved End Watch Band Rubber Strap Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc - MiLTAT 18mm Wetsuit Ratchet Buckle Diver Extension Clasp, 316L Stainless Steel Brushed --- ## 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.kg/products/197177774-cb03-20mm-watch-strap-curved-end-rubber-band-replacement-seiko](https://www.desertcart.kg/products/197177774-cb03-20mm-watch-strap-curved-end-rubber-band-replacement-seiko) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-12*