Tattoo Pen Power Supply Kit designed for professional use and practice. Combines a lightweight aluminum pen with a precision adjustable power supply and built in battery for corded or cordless operation. Key benefits efficiency motor: Coreless motor delivers strong power with low noise and low vibration. At 12V the motor reaches 10000 RPM for penetration and consistent needle speed, improving shader performance and color packing while keeping heat build up low. Wide compatibility: Accepts most tattoo cartridge needles on the market and uses a standard clip cord interface for compatibility with most machines. Portable and controllable power: Built in 1300 mAh battery provides 3 to 5 hours of continuous use on a full charge. The power supply offers adjustable voltage from 5.0 to 12.0 V with 0.1 V resolution and an LCD displaying current voltage and remaining battery for easy monitoring. Ergonomic and durable: Pen shaped aluminum alloy body is lightweight, easy to grip, and built for repeated studio use. Professional ready: A complete, compact kit suitable for experienced tattoo artists and beginners practicing technique. Key specifications Item type: Tattoo Pen Power Supply Kit Material: Aluminum alloy and electronic components Pen length (without needle): approximately 116 mm Pen diameter: approximately 30 mm Stroke: approximately 3.5 mm Needle protrusion: adjustable 0 to 4.5 mm Rated voltage: 8 V Output power: 5 W Start voltage: 5.0 V Working voltage range: 5 to 12 V (avoid prolonged operation at maximum voltage) Motor speed: up to 10000 RPM at 12 V Battery: built in 1300 mAh Interface: standard clip cord interface for corded and cordless use Needle compatibility: fits most cartridge needles on the market Typical use scenarios Studio sessions: Fast line work and efficient shading for commissioned tattoos where consistent needle speed and low vibration are required. Mobile or convention work: Cordless operation and compact size allow reliable performance on location with easy voltage monitoring via the LCD. Practice and learning: Suitable for apprentices and beginners practicing lining, shading, and color packing without managing multiple accessories. What makes it practical Precise voltage control with 0.1 V adjustment lets artists tailor speed for different areas of the body and needle configurations. Secure, standard interface ensures a stable connection for both corded and cordless setups. Ergonomic pen form factor provides a familiar grip to enhance precision during detailed work. This kit provides a balanced combination of power, control, and portability for tattoo artists who need a reliable pen machine and adjustable power supply for studio or on location work.