---
product_id: 723956007
title: "GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories"
price: "¥18087"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/723956007-gc-guan-chao-19mm-20mm-21mm-rubber-silicone-watch-strap
store_origin: JP
region: Japan
---

# 21mm precision fit 100% waterproof silicone 316L stainless steel buckle GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories

**Price:** ¥18087
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your wrist game with precision, comfort, and style!

## Quick Answers

- **What is this?** GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories
- **How much does it cost?** ¥18087 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/723956007-gc-guan-chao-19mm-20mm-21mm-rubber-silicone-watch-strap)

## 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

- • **Universal Fit Range:** Fits wrists 15-19cm with adjustable 90mm strap sides
- • **Premium Silicone Comfort:** Odor-proof, sweat-resistant natural rubber for all-day wear
- • **Seamless Radian Interface:** Flawless watch-to-band connection for sleek style
- • **Durable Stainless Steel Buckle:** 316L steel clasp built to last and resist corrosion
- • **Tailored for Longines HydroConquest:** Specifically designed for 41-43mm Conquest models

## Overview

The GC GUAN CHAO silicone watch strap offers a waterproof, sweat-proof, and odor-resistant upgrade tailored for Longines HydroConquest watches (41-43mm). Featuring a 21mm radian interface for a seamless fit and a durable 316L stainless steel buckle, this strap balances professional style with everyday comfort for the discerning millennial manager.

## Description

GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories (Black Folding clasp, 21) : desertcart.co.uk: Fashion

Review: La correa está bien en general, se ve bonita y cumple bien con su función, excepto que noto demasiado rígido el material empleado. Eso hace que la hebilla no siga la curva general de la muñeca y provoca que se forme una brecha que se atora por todos lados. En la foto ya no se ve tan dramático porque la sumergí por unos minutos en agua hirviendo para darle una forma curva. La verdad, el material tendría que ser más flexible.
Review: The quality is not what I was expecting, it doesn't look original, not fitting wroud the hand, compared with the price I feel very disappointed.

## Features

- Watch band design: Watch band interface RADIAN interface design, watch band installation, watch and band connection position closely connected, beautiful style.
- Band length: The length of the two sides of the strap is 90 mm, suitable for 15-19 mm wrist wear.
- Strap material: the Strap is made of natural rubber, no dust, odor-proof, sweat-proof, soft and comfortable to wear.
- Table Buckle Material: table buckle with stainless steel production, 316L material, stainless, durable.
- Strap dimensions: Strap interface dimensions: 21MM
- For Watch: GC Guan Chao Watch strap for Longines hydro conpuest. Watch. Suitable for conpuest watch with diameter 41mm, 43mm.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0DPGFXM3Y |
| Customer reviews | 3.8 3.8 out of 5 stars (24) |
| Date First Available  | 2 Dec. 2024 |

## Images

![GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories - Image 1](https://m.media-amazon.com/images/I/414IwUenNbL.jpg)
![GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories - Image 2](https://m.media-amazon.com/images/I/414LkmDigwL.jpg)
![GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories - Image 3](https://m.media-amazon.com/images/I/41QRQDzsZ4L.jpg)
![GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories - Image 4](https://m.media-amazon.com/images/I/41QrnfxjmkL.jpg)
![GC GUAN CHAO 19mm 20mm 21mm Rubber Silicone Watch Strap Waterproof Watchband for Longines master Conquest HydroConquest L3 Black Accessories - Image 5](https://m.media-amazon.com/images/I/41ebYi0WdFL.jpg)

## Customer Reviews

### ⭐⭐⭐ Review
*by R***O on 13 April 2023*

La correa está bien en general, se ve bonita y cumple bien con su función, excepto que noto demasiado rígido el material empleado. Eso hace que la hebilla no siga la curva general de la muñeca y provoca que se forme una brecha que se atora por todos lados. En la foto ya no se ve tan dramático porque la sumergí por unos minutos en agua hirviendo para darle una forma curva. La verdad, el material tendría que ser más flexible.

### ⭐ Review
*by A***R on 12 February 2023*

The quality is not what I was expecting, it doesn't look original, not fitting wroud the hand, compared with the price I feel very disappointed.

### ⭐⭐⭐⭐⭐ Review
*by A***E on 1 January 2023*

Quality rubber strap with premium hardware. Perfect fit and looks just like the stock strap that comes with the watch. My only complaint is the sharpness of the buckle corners. I sanded them down with success and no damage. I’m very pleased with the strap despite. Saved a ton of money on the same look! Can’t go wrong.

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**Shop now:** [https://www.desertcart.jp/products/723956007-gc-guan-chao-19mm-20mm-21mm-rubber-silicone-watch-strap](https://www.desertcart.jp/products/723956007-gc-guan-chao-19mm-20mm-21mm-rubber-silicone-watch-strap)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-24*