BLUELOVER Smart sports watch,voice Make Answer Calls ,Instant message notifications so you don't miss anything important. Support IOS 9.0 + Android 9.0 +. 110+ sport modes to keep you fit,250+ online watch faces, also with your photo as a watch face. Blood oxygen monitoring, Automatically measure the current blood oxygen data and vibrate to indicate the result. 24-hour heart rate tracking,Automatically measure the current real-time dynamic heart rate, view data records. Sleep Butler,Record your daily sleep and tell you how much you sleep deeply, lightly and awakely. The voice assistant feature gives you more freedom.Alarm clock reminders so you don't miss anything important,(Calculator function) to make the calculation easier. 2 hours full charge, 20 days standby time, 5-7 days of normal use.