Upon opening gatttool, the devices are once again connected, and then the integer is sent to the handle of a Bluetooth characteristic defined by the wristband. Not only does this integer affect what is displayed on the LCD and how the LED is lit, it also wakes the Bluetooth chip out of a low power mode. After the integer is sent, the nRF52832 is put into low power mode again, and the devices are disconnected and unpaired to limit power consumption.