• Hollow cup motor developed over one year for greater durability, with a lifespan 4 times longer • 12V and 10,000 rpm, provides high speed, low noise, low energy consumption, and stable operation • Standard stroke length of 3.5 mm, compatible with all standard cartridge needles • Compact body of 25 x 132.4 mm and lightweight at 117.2 g, easy to handle • Includes 2 rechargeable 900mAh batteries, with a runtime of 4 to 8 hours • Can be used wirelessly or with a cable thanks to the included RCA connector • Made of aviation-grade aluminum, with an ergonomic and non-slip design for greater comfort and control • Visible OLED display clearly shows working voltage, usage time, and current • Adjustable voltage from 4V to 12V, with precise 0.2V adjustment and stable output • The kit includes: 1 pen, 2 batteries, 1 RCA connector, 1 USB-C cable, 5 cartridge needles 0803RL, 5 cartridge needles 0801RL, 20 pigment cups, 2 black gloves, 1 practice skin, 1 non-slip cover, and 1 box