Compatible Models: For Apple Watch 38mm/42mm/40mm/44mm 42/44mm (male) length: 255mm, width:23mm 38/40mm (female) length: 225mm,width:20mm 38mm=40mm;42mm=42mm This band for apple with strong magnetic clasp, the strap is adjustable and offers security ensuring a perfect fit with your wrist when you use your watch,no buckle needed, easily stick and lock your watch band. The steel mesh belt is more delicately woven, the steel mesh belt is more supple, the metal plating is more delicate and wearable