New Wireless Battery Tattoo Pen Machine Gun Supply Permanent Tattoo Pen Machine

Menu Display Module Switching: Long press Power button to switch between different interfaces, including timer, voltage/frequency selection, voltage interval selection, rotation direction selection, and power off selection. The OLED screen is eye-friendly and has adjustable brightness.
Charging Module: Equipped with  2400mAh replaceable battery , there is no need to worry about running out of power while working outdoors. To achieve better tattooing results, please use the provided USB charging cable to recharge. It takes 2.5 hours to fully charge, and supports 6-12 hours of usage time.
Time Counting: By switching modes, the time counting function can be turned on or off. If the time mode is enabled, it can record 0-24 hours, with each recording increasing by 1 minute, even if there is no working. If the time needs to be reset, simply restart the device after turning it off.
Tattoo Frequency/Voltage: Depending on the preference of the tattoo artist, either frequency or voltage can be chosen as the main parameter display. 1 Hz represents 60 rotations per minute, so 100 Hz would mean 6000 rotations per minute.
Voltage Interval Mode: A 0.5V increment can be chosen for quick voltage adjustment, or a 0.1V increment can be chosen for more precise adjustments.