To turn your device on, press and hold the button on the front of your device for one to two seconds.
After a few seconds the light will come on and shortly afterward will turn green or red.
If the light is red you will need to charge your device soon.
If the light is green the device is ready to use.
To turn your device off, press and hold the button on the front of your device for one to two seconds.
The device can not be turned off before the light has turned red or green.
Please refer to What the different LED colors mean for more information.