The Firstbeat Bodyguard 3 device is charged with a separate USB-C cable.
- Detach the electrode cable from the measuring device.
- Plug in the USB-C cable and with it plug the device to a computer USB-port.
The device is charging when a green LED light is flashing. The device is fully charged when then green LED light is burning constantly. You can then detach the device from the USB port, plug in the electrode cable and start your measurement.