Dragonhawk cartridge tattoo machine precision RCA motor, continuous operation, Low noise, Long-lasting stability, Light weight, unibody. Compatible with all cartridge needles. Ergonomic, lightweight pen-style machine. This machine features a powerful motor and an advanced gear system that guarantees reliable, quiet operation without any vibration. Dragonhawk Atom tattoo pen 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: 155g Machine Diameter: 30mm Machine Length: 123mm Operating voltage:5-10V RCA Needle protrusion:0-4.5mm Stroke:3.5mm Speed: 8V/10000Rpm