Feature:1. Stable Motor: Tattoo machine pen built in powerful motor, with stable power, high speed, and low noise, DC converter, and tattoo battery pen allow you can corded operation and cordless operation.2. Liner Shader: DC tattoo machine pen working voltage is between 5‑12V, the adjustment accuracy is 0.5V, tattoo artist can choose the appropriate voltage according to their needs, suitable for both liner and shader.3. 1950mAh Battery: Cordless tattoo battery pen built in 1950mAh large capacity lithium battery, which can be fully charged in 1.5 to 2 hours and can last 5 to 7 hours, you can remove the clip cord for convenient use.4. LED Display Screen: tattoo machine pen with LED screen to display working hours, current working voltage, and available electricity, allowing tattoo artists can track the tattoo state at any time.5. Aluminium Alloy: Tattoo machine pen made of high quality aluminum alloy material, adopted non slip handle design, which is comfortable to use for a long time without fatigue.Specification:Item Type: Tattoo Machine PenMaterial: Aluminium AlloyLength With Cordless Battery Converter: Approx. 177mm / 6.97in(Without Needle)Maximum Diameter: Approx. 30mm / 1.18inLength With DC Converter: Approx. 114mm / 4.49in(Without Needle)Maximum Diameter: Approx. 30mm / 1.18inCharging Interface: USB Interface Battery: Lithium Battery 1950mAh (Included) Needle Stroke: 0-3.5mm / 0-0.14inProduction Process: CNC Integrated Fine Carving Voltage: 5-12V, Adjustment Accuracy is 0.5V.Product Display: HD LED Display (Current voltage, power usage) Use Needle: Apply to the market most tattoo cartridge needles.Charging Time: Fast charging, can be fully charged in 1.5 to 2 hours when there is no power.Use Time: Output current is 2.0A, can work for more than 5 hours under normal 7V voltage, voltage is stable, intermittent use can be about 6 to 7 hours.How to Use:When using