BUENAVO Wireless S2 Fitness Monitor Smart Bracelet Bluetooth 4.0 Heart Rate Monitor, Water-Proof IP67 Sleep Monitor Notification Alerts Wristband for Android iOS Phones, Black;

Faq: Q: Why won't watch charge? A: It is with built-in USB charger, just pull off the watch band on the opposite side of the touching key and then plug it into a phone charger or laptop USB port upside down to charge successfully. Q: Why no sleep monitor icon? A: It is no long needed. We updated chip as of June 1st to track sleeping patterns automatically. Manually sync sleeping data from band to smart app and check on trend when you wake up. Q: Data not accurate? The unit of smart watch defaults to be metric. Remember to switch it to us and adjust your stride to make tracking more accurate. And the data is only for reference, its purpose is to push you exercise. How to work? 1. Download the smart wristband 2 on app store or google play store or scan qr code in the user manual to download. 2. Activate the Bluetooth on your phone to get paired. 3. Sign up and set your profile. Remember to adjust your stride and switch unit from metric to us, then sync to band to make petometer more accurate. 4. Go to setting and enable any function you need. Simple and easy. 5. Start tracking your activities with s2 wristband. All data will be synced to smart app when you visit dashboard (except for sleeping patterns, you need to manually sync the data to the app by clicking on the circle and check data on the trend). Parameters: Cpu: Nordic 51822 display: Oled 0.95" battery: 90 mah charger requirement: Voltage 5v charge rage: 200 mah-2a charge time: 2 hours standby time: 5 days os requirements: iOS 7.0 or above android 4.3 or above data sync: Bluetooth 4.0 waterproof: Ip67 packaging: S2 wristband + user manual. Note: The hr data is just for reference, not for medical use. Synchronized notifications from your phone - receive instant notifications from your phone, including phone calls, sms, emails, Facebook, twitter and all kinds of social information.