Overmax TOUCH GO 2.5 Manual page 3

Charging:
Before you use the device for the first
time, please charge it. To do so, take the
device out of the bracelet, as showed in
the picture below.
Touch Go 2.5 can be charged with current
5V/1A via USB port or via a relevant
power charger.
Controlling Touch Go 2.5
To control the device, use the button on
the screen.