1. Material: watchband: aluminum alloy head grain: stainless steel. 2. Special points: wear resistance, high temperature resistance, non-deformation, non-toxic, tasteless, no side effects on the human body and long service life and other characteristics. 3. Advantages: long service life, no skin irritation, etc. 4. Usage: suitable for parties, festivals and promotions, suitable for people of all ages. 5. Easy to install, and precisely fits for your Apple Watch. 6. Width of the band: 22mm 7. Wrist circumference: 125-190mm 8. Notice: Host not Included.