Dragonhawk P1 Wireless Battery Tattoo Power Supply

LED-Digital Display provides high and efficient performance Charging Time: 3 Hours.
Usage Time: 5-8 Hours, depending on personal usage and the tattoo machine.
Connection: RCA adapter.
Output voltage: between 4V-11V
Weight: 2.1oz
Hold(+) button for 2 seconds to turn on and hold (–) button for 2 seconds to turn off.Press (+) and (–) to increase and decrease, respectively, the voltage by 0.1V The LED digits will start blinking when the battery pack is low in battery, please recharge the battery pack immediately. When charging, the LED digits’ outlines will start circling. Once the battery pack is fully charged, the LED display will show a dash line (-) in the middle.