INSTRUCTIONS 1. The Tattoo Power Supply is a LED- Digital Display that provides high and efficient performance. The charging voltage is 5V/1A for the power adapter. Charging Time: 3 Hours, Usage Time: 5- 8 Hours, depending on personal usage and the tattoo machine. 2. Hold + button for 8 seconds to turn on and hold - button for 8 seconds to turn off. 3. Press + and - to increase and decrease, respectively, the voltage by 0.1V. 4. The LED digits will start blinking when the Tattoo Power Supply is low in battery. 5. The digits that show “0- 100” when turning on indicates how much energy is left. 6. When recharging, the LED digits' outlines will start circling. Once the Power Supply is fully energy, the LED display will show a dash line (-) in the middle. 7. The package contains the I- L1 Power Supply and a USB Type-C cable. Packing List 1 Power Supply & 1 Type-C cable included. (Note: charger is not included, you can use your phone charger ) Purchase Note Please choose the right connector type. RCA or DC. NOT compatible with Cheyenne machines. 100% satisfaction guarantee. If you have any questions about the Power Supply, please contact us, we will help you to solve your problems.