Our unique Apple Watch band is made from 100% carbon fiber bracelet links. The sleek, smooth-textured style of these Apple Watch link bands are compatible with all Apple Watch models. They also come in two elegant smartwatch band designs: Modern and Retro, which both fasten with a magnetic black stainless steel clasp. Measurements Modern Length: 7.3in (185.4mm) Width: 0.87in (22mm) 20 links Weight: 1.1oz (32.4g) Retro Length: 7.3in (185.4mm) Width: 0.87in (22mm) 16 links Weight: 1.1oz (32.6g) Compatibility Compatible with Apple Watch Series 6-1 & SE, 38/40 & 42/44mm. Seawater may cause stainless steel pins to erode over time. Modern fits a wrist size of up to 8.1in/205mm with extra links (not including Apple Watch). Retro fits a wrist size of up to 7.5in/190mm with extra links (not including Apple Watch). Materials and Tech Carbon Fiber Stainless Steel