AWOW Bluetooth Smartwatch Calorie Counter Heart Rate Tracker Smart Watch with Camera It's a functional smartwatch based on android 4.4.4. Complete with a multitude of apps like calculator, pedometer, alarm clocks, sleep monitor, music player, camera, calendar, push notification, remote control, NFC and different theme. As a functional smart watch, the device can connect to your phone via Bluetooth and can be used to answer calls, respond to texts, set alarms, and tell time. Heart rate (HR) is an excellent measure of exercise and your training intensity. In the human body heart rate is regulated to match the demands of the body and the environment. When exercise intensity increases, heart rate also increases to match the increased rate of energy expenditure and oxygen uptake. With AWOW smart watch, your heart rate could be checked at any time and show result in fast. Use the AWOW smartwatch with SIM card for phone calls, sending and receiving SMS message by inserting a micro SIM card into the watch, support: GSM??850/900/1800/1900 Buy with confident: Items shipped from Amazon and can be returned within 30 days