Physical button, return to by one press.
In order to prevent static electricity in the water from interfering with the screen,Under swimming mode, the screen touch function can be turned off.
The more powerful CPU—NRF52840, has larger storage, lower power consumption, faster Bluetooth data transmission, and more powerful functions.180 mAh large capacity battery, support 7-10 days of use time
support apps alert: You can choose all apps in your mobile phone
support apps alert:(Call, SMS, WeChat, QQ, Whatsapp, Facebook, Twitter, Skype, Snapchat, Line)