1, material: high quality environmental protection silicone + alloy buckle-2, Size: 38/40/41/42mm-3, connection head: plastic connector-4, hollow bracelet design, breathable and comfortable summer first choice, fit wrist-5, removable ring buckle, adjustable strap, elastic wear-6, applicable iwatch1/2/3/4 5/6/7/8/9 / SE/SE2