1、COMFORTABLE GRIP: Tattoo pen features a non slip handle compatible with most cartridge needles, built in stainless steel ball, can be rotated to adjust the length of the needle stroke. 2、WIRELESS OPERATION: Eccentric wheel stroke 4.0mm, fully compatible with motor, low noise vibration, sound only 35‑40 db. Precise direct drive system, no cumbersome accessories and space limitation. 3、ALL IN ONE: Comes with direct drive system eliminates cumbersome accessories and space limitations, giving you greater freedom to work with ease. 4、POWERFUL CORELESS MOTOR: With 5‑12V voltage adjustment, the powerful 2.0A output motor easily delivers up to 10000r/m at 10V for easy liner and shader, producing long lasting and vibrant colors. 5、LONG BATTERY LIFE: Tattoo pen has a built in 2400mAh battery, which can be quickly charged in just 1.5‑2 hours and provides up to 7‑8 hours of continuous use for endurance and reliability. 6、LED DISPLAY: Clearly display accurately shows the current tattoo voltage, remaining power, and operating hours, allowing you to easily monitor the status of the machine and ensure optimal performance. Item Type: Wireless Tattoo Pen Material: Aluminum alloy, electronic components Machine Size With Wireless Power: Approx. 147 x 30mm / 5.8 x 1.2in Battery: Built in lithium battery 2400mAh Process: CNC fine engraving Stroke: Approx. 4mm / 0.16in Needle Length: Approx. 2 ~ 4mm / 0.1 ~ 0.2in adjustable Motor: Approx. 26 x 7mm / 1 x 0.3in, coreless motor Battery Interface: Type c interface (USB C) Use Time: Battery output current of 2.0A, can continue to work 7-8 hours Charging Time: Fast charging, no power state 1.5-2 hours can be full Operating Voltage Range: 5-12V; Voltage Adjustment Accuracy: Short Press: ±0.1V Long Press: ±0.5V Motor Speed: 10V 10000r/m LED Display Content: output voltage, battery capacity situation, operating hours Structure: All in one lithium battery pen structure, built in lithium battery, battery parts can be rotated and removed Needle: Suitable for 99% of the tattoo cartridge needle on the market 1 x Wireless Tattoo Pen 1 x USB Charging Cable 1 x Accessories Package (Accessories Shipped Randomly) 1 x Storage Box