HUAWEI Band 3 Pro houses a 0.95" AMOLED color touchscreen, making this smart band fitness tracker easily readable in strong sunshine. With HUAWEI TruSeen 3.0 precision heart rate monitoring system, you are able to know your realtime heart rate better and deeper than ever. Sleep with HUAWEI Band 3 Pro on your wrist, track your whole night spleeping condition scientifically, and improve your sleeping quality gradually with over 200 solutions. Marathon enthusiast? No worries about the battery life any more. This new HUAWEI smart band can hold up to 7 hrs with GPS mode on, and up to 12 days on a typical use. 5ATM waterproof. You can freely enjoy your swimming and improve your stroke thanks to the stroke recognition of HUAWEI Band 3 Pro. 8 activities supported, outdoors and indoors. Material for Body is Metal, high gloss Ultraviolet coating and for Wrist strap is Silicon rubber