1、7 STROKE LENGTH: Tattoo pen offers 7 different stroke 2.4mm, 2.7mm, 3.0mm, 3.3mm, 3.6mm, 3.9mm, 4.2mm, allowing tattoo artists to find the perfect needle depth for their desired effect. 2、WIRELESS DRIVE SYSTEM: With its precise wireless drive system, this tattoo pen eliminates the need for complicated accessories and external power sources. 3、RCA ADAPTER: Equipped with an RCA adapter and compatible with RCA clip cords, this tattoo pen can easily switch between wireless and wired modes. Standard needle port, fits most cartridge needles. 4、CORELESS MOTOR: With an adjustable voltage range of 4‑12V and a maximum speed of 10,000 RPM at 10V, 2.0A output, which delivers stable and powerful performance. 5、LONG BATTERY LIFE: Featuring a large capacity 1800mAh lithium battery, this tattoo pen can be fully charged in approximately 2 hours and provides up to 6 hours of continuous working time. 6、OLED DISPLAY SCREEN: The OLED display screen shows the current tattoo voltage, remaining battery life, and operating duration, providing real time monitoring of tattooing status. Item Type: Wireless Tattoo Pen Material: Aluminum, Electronic Components Machine Size (with Wireless Power Supply): Approx. 134 x 35mm / 5.3 x 1.4in Machine Size (with RCA Conversion Head): Approx. 122 x 35mm / 4.8 x 1.4in Battery: Built in 1800mAh lithium battery Craftsmanship: CNC engraved for precision Stroke Length: Adjustable in 7 levels: 2.4mm, 2.7mm, 3.0mm, 3.3mm, 3.6mm, 3.9mm, 4.2mm Motor: Approx. 18 x 27mm / 0.7 x 1.1inmotor Vibration Value: 1.1m/s² Decibel: 41-43dB Motor Speed: 10V, 10000RPM Battery Interface: Type C (USB C) Usage Time: The battery outputs a current of 2.0A, allowing for continuous operation for 6 hours. Charging Time: Fast charging, fully charged in around 2 hours when in a depleted state. Working Voltage Range: 4-12V Voltage Adjustment Accuracy: Short press: 0.1V, long press: 0.5V LCD Display: Shows output voltage, battery capacity, and operating duration. Structure: Integrated lithium battery pen structure, with a rotatable and detachable battery section. Needles: Compatible with 99% of tattoo needles available on the market. 1 x Wireless Tattoo Pen 1 x RCA Conversion Head 1 x RCA Clip Cord 1 x USB Charging Cable 1 x Accessory Kit (Accessories Shipped Randomly) 1 x Storage Case