Trait-Tech H8 Waterproof Bluetooth Smart Bracelet Sleeping Monitor Tracker Passometer for IOS Apple Android Phone (Orange) 0.68 inch OLED 96*32 screen shows the Steps, Calorie, Distance, Time, Sleep quality clearly Recording your exercise steps,walking distance,calories burned and sleeping Smart Reminder:Incoming calls,messages,do some exercies,take your medication Function:Passometer,Sleep Tracker,Call Reminder,Time/ Alarm clock Operating temperature -20 to 45 degrees centigrade