Require: iOS 7.1 & Android 4.4 above(Smartphone only, not for PC, iPad or Tablet).

App Name: VeryFitPro. ( You can download it from Apple Store or Google Play)

VeryFitPro app may NOT work with US version Samsung Galaxy J series mobile phones (e.g. Galaxy J3，J7).

【 Fitness Tracker】- Accurately track your steps, distance traveled, calories burned,activity time all day.14 training modes available for you to better track your other activities.

【 Heart Rate Monitor Watch & Sleep Monitor】 - Adopt the latest HR sensor for accurate and effective heart rate monitoring;Automatically detect your sleep during 9 pm to 8 am and analyze your sleep quality with deep sleep,light sleep and awake time.The silent vibration alarm can wake you up without disturbing others.

【 Never Miss Call Message】- See Calls & Messages on Willful SW352 smart watch: Receive call, calendar, SMS and SNS (Facebook, WhatsApp, LinkedIn, Instagram, and Twitter) notifications on display; never miss important messages.

【 Waterproof Activity Tracker with Color Screen】-IP68 waterproof stand,Willful SW352 pedometer watch can be used when swimming or diving; 0.96 inch LCD color screen offers excellent HD image quality.Slim cool design make it quite unique from other smart bands.

【 Key Features & Long-lasting Battery】- Screen brightness adjustable,camera control,sedentary alert,wrist sense,connect mobile GPS to draw the run path;This fitness watch has a USB plug at the end,just charge with any USB port(no cable needed).One full charge gives you up to 7 days of working time.