Tattoo Power Supply made in China Style: Tattoo Wireless Power Supply Size: 33 mm diameter x 80 mm total height Volt Level: 5v, 6v, 7v, 8v, 9v, 10v, 11v, 12v Material: (Outer Shell)Aluminum, (Battery Cell Type)Li-Polymer Battery Model: website:http://www.skytattool.com/power-supply/tattoo-power-supply/