The Bluetooth® v4. 0 connection allows you to access a host of useful features and functions for your smartphone, such as incoming call and email alerts on your G-SHOCK, phone finder, link loss alert, automatic time adjustment, and much more. All of the functions are powered by a single coin cell battery.24 May 2018
How do you use step tracker on G-SHOCK?
https://www.youtube.com/watch?v=0N0oFf8XUx8
Where is the G-Shock serial number?
Some high end Casios (including G-Shock models) have a serial number, its on the back and is 6 characters long.