Dragonhawk Atom M1 tattoo pen machine has RCA jack, continuous operation, Low noise, Long-lasting stability, Light weight, unibody. Compatible with all standard cartridge needles. This tattoo pen machine provide visible needles depth, the Dragonhawk tattoo power supply provide quick and accurate activation/voltage adjustments. offers you a better user-experience. Rotate the tattoo machine grip to adjust the needle's deepth. 9000 R/Minute, strong and powerful, available for shading and lining. Stable operation between 6-9V with RCA cord connection. Specifications: Weight: 168g Machine Diameter: 30mm Machine Length: 120mm Stroke Length: 3.5mm Working Voltage: 7-9V Speed: 9V/9000Rpm