The link bracelet is made from the same 316L stainless steel alloy as the case and consists of over 100 individual parts. The machining process is so precise that it takes almost nine hours to cut all the links for a single bracelet. The special bi-fold clasp closes seamlessly with the bracelet. And thanks to a simple mechanism, individual links can be easily detached or added without special tools. You can pair most straps with any Apple Watch Series 3 or newer case of the same size. 41 mm straps fit 38 mm and 40 mm cases. 45 mm straps fit 42 mm, 44 mm and 49 mm cases.