Link Bracelet Stainless Steel Strap Band Bracelet compatible for Apple Watch / Apple Watch Sport ( 38 mm , 42 mm ) Crafted from the same 316L stainless steel alloy as Apple Watch Case, each links are designed carefully to ensure the comfortable and flexible. With Butterfly locking mechanism, it ease to wear and very easy to adjust the size of the bracelet by adding or removing links. The best stainless steel thought the fine polishing process ensure the high end surface of the band