You must connect phone through bluetooth before use.
When it is connect with the mobile phone, you can answer the phone on it.
It is also a health partner, be ready to help you to do physical exercise at any time.
Sleep Monitor: It can monitor you quality of sleep, to help you improve you sleep.
Anti lost: Watch will send alarm after leaving the mobile phone a certain distance.
Both as comfortable watch, smartphone companion and sports partner, it is the best product for yourself and your friends.
1*Rwatch M26S Smartwatch