Not all rubber is created equal. FKM (Fluoroelastomer) is the same material trusted in NASA O-rings, deep-sea diving equipment, and high-performance engines. Whether you're at the gym, on a dive, out for a run, or just don't want to baby your watch — FKM handles sweat, saltwater, heat, and daily wear without complaint.

• FKM Fluoroelastomer Rubber: aerospace and dive-grade material, far superior to standard silicone. Soft on skin, tough against everything else
• Quick Release: tool-free strap changes in seconds
• 316L Stainless Steel Buckle & Spring Bars: surgical-grade steel, used in medical implants and professional dive watches. Corrosion-resistant