Thank you for viewing! This item is unopened. Compatible models: Apple Watch Series Ultra 2/Ultra/9/8/7/6/se/5/4/3/2/1/ Band 42mm/44mm/45mm size Compatible with all models, Apple Watch adapter is removable Comfortable to wear: The nylon strap is very breathable, keeping your wrist ventilated and comfortable during exercise and sweating, preventing skin irritation on your wrist. Easy to put on and take off: This band fits most adult wrists, suitable for wrists with a circumference of 6.0"-8.7" (150mm-220mm). You can adjust the size based on your wrist size using the adjustable nylon strap. You can easily attach and detach the fitness tracker to the nylon band. Nylon watch band compatible with Apple Watch 45mm 44mm 42mm Sport Nylon Strap iWatch