Wormhole Wireless Tattoo Gun Instruction Manual 1. Press and hold the power button for 2-3 seconds to turn it on/off the power. 2. Tap the power button once to switch the voltage. Click the power button to adjust the voltage 6 7 8 9 11V. (The gear will cycle from low to high) 3. Press and hold the button for 1 second to turn it off. Double-click to pause while working. 4. During the pause period, if there is no action within 5 minutes, the machine will automatically shut down. Notice: * Don't use this pack while charging.