1.Output short circuit protection
2.Dual input charging protection (batteries and the control board both equipped with shutdown,overshoot and over discharge protection)

1.Press and hold the power button 2 seconds to turn on/off.
2.Click the power button to adjust the voltage 6 7 8 9 11V.
3.Default booting at 10V start-up voltage in 0.2s,then load to the last memory working voltage.
4.It will shift to display the capacity of battery without working over 2s, and the indicator light is on the breathing state,the five indicators represent for 20%-100% of the power capacity,Click the button return to voltage display.
5. The indicator light is blinking during charging, stop blinking with the overshoot protection working when full charged.
6.The pack capacity is 1200mAh,3.5 hours to be full charged at above 1A charger,about 8 hours working at 8V .
7.This pack is only for rotary machines but coil machine.
8.Don't use this pack while charging.

Cartridge characteristics:
MAST Pro high-grade needle ,we doing high quality products and extreme spotless control,numerous safety and quality certification,
more style and options are also available,we have adopt the higher standard for needles,to ensure the highest tattoo industry standard.
Experienced soldering and over 20 years of industry of needles makes all details perfectly,
Perfectly matches with needles and shell,high-stability,smooth unhindered ink flow,improves the requirement of your tattoo needle's quality ,Achieve more customer reputation.