Grey 20mm FKM Rubber Strap with Quick Release Feature for Fast and Easy Fitting and Removal 200m G10 Synthetic sapphire is one of

Synthetic sapphire is one of the strongest materials used for watch crystals

with slight variations depending on the production factory

sapphire costs more—which is exactly why it’s normally reserved for higher-end professional watches like this one

Sapphire crystals undergo a heat treatment process to remove internal stresses

Grey 20mm FKM Rubber Strap with Quick Release Feature for Fast and Easy Fitting and Removal 200m G10 Synthetic sapphire is one ofSKU: FKM_SP20GRY These straps are a premium alternative to our silicone NATO straps, designed for users who want greater durability, comfort, and long term performance. Constructed as a single pass 20mm rubber strap with two retaining loops, they offer a secure fit while maintaining a clean, tactical appearance. Manufactured from FKM rubber (Fluoroelastomer), these straps are built to perform in demanding environments where ordinary rubber or silicone