Mini Kitty Black Fitness Tracker Bracelet Waterproof Smart Wristbands For Men Women Boys Girls iOS Android Smartphone [Great Craftmanship]- ID115 wristband built-in 0.86 inch OLED display screen, clearly showing the date, clock and battey power. Just 18g, it looks fashion and thin. Silicone watchband with adjustment holes, wear it comfortable and valuable. [Sleep Monitor for Better Rest]- It can automatically recognize your sleeping status: sleep degree, light sleep time, deep sleep time and awake hours. Completely tracks your sleeping quality, effective to help you get the better rest at night. [Convenient USB Charging]- This wristband adopts the USB charge port, even without the charge cable. It can remove from the bandonly, only there are some USB port device, you can plug inot the bracelet to charge well anytime and anywhere. [Activity Tracking for Workouts]- It tracks all-day activity like steps, distance, calories burned, floors climbed and active minutes, and these data can sync to the app. Built-in high perfermance G-sensor, you can get more accurate data to maximize the workouts in a whole day. [Notification Reminder in Time]- This bracelet can sync the nofications from imcoming calls, messages or the apps like whatsapp, skype, fackbook, Instagram and etc. The wristband can vabrate remind you to read the notifications or texts. Never miss out the important business.