External docking station to send data to your smartphone – compatible with android (from os version 9. 0 onwards) and ios (from os version 12 onwards) – or to transfer data on pc (from windows 10 onwards) and mac (from sierra onwards) through usb connection. The docking station is equipped with a cr 2032 battery included and replaceable by the user, which allows not to consume the internal battery of the dive computer. The specific app is available on the google play store, app store, huwaei app gallery