Product details
With the Thumbox Power Tube, you can power your mobile devices such as smartphones, tablets, MP3 players, and more on the go. Simply connect your device with a USB charging cable, and the charging process starts automatically. A four-stage LED display shows you the current remaining energy of the Power Tube at the push of a button. The Power Tube can be easily recharged at any USB port. Additionally, its rubberized outer casing provides protection against shocks.