DISCOVER DEVICE® Wireless Tattoo Battery Thunder V7

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Input Voltage: DC5VOutput Voltage: 4.5V-12V Battery type lithium ion cellBattery capacity: 1500MACharging time: 5hours(different charger different charging time)Working time: norma l use for 4-6 hours, power conversion rate 275% Net weight: 70GDimension:78*30*33mmNote: no using charger higher 5V (all at your own damage) Instructions(1)Full charge for first use(2)Press switch in the middle: Long press on/off, short press pause/start(3)The left button for - voltage,while right button for + voltage.(4) Double quick click the switch to display the power percentage on or off.(5)If power less than 19%, charging lamp will flash: plug in charger and the lamp stay on(6)100% full power, full power display light on Show more