INKin CL2 4.0mm Stroke Wireless Tattoo Gun (2 Batteries)CL2 4. 0mm stroke length wireless tattoo pen designed for professiona tattoo artrists or beginners, easy to use which has a visible LED Display (show voltage, capacity, timing simultaneously), long press voltage button will adjust quickly voltage 0. 5v + , stable voltage and low noise gives satisfied experence to you and your clients. Work 5 HoursCL2 wireless tattoo machine power supply with 1800mAh battery capacity, takes 2 hours to full charge, runs