Plug your device into a power outlet and turn it on by holding the SIDE button for 2 seconds. Press the MIDDLE button to use the device on manual mode. Please note, due to the safety tech, the device will only flash when in contact with your skin. To speed up the process, activate the automatic mode by holding the MIDDLE button for 2 seconds - you can then glide it along your target areas (perfect for larger surfaces e.g. legs)