Kiss of Dragon V1 Kits Standard & Dot work dual modes Wireless Tattoo Machine Weight 254g Size 135*40mm Motor 30*24mm Motor Speed 8V/9000Rpm Torque 100g.cm Stroke 2.0-4.2mm Voltage 4-12V Battery Capacity 1600mAh Battery Life 4-6hours Charger time 2.5hours Vibration Value 0.2m/s2 Decibels 42-44dB POWERFULL MOTOR Unique And Innovative Motor Assembly Improve the Machine service life 7-LEVEL ADJUSTABLE STROKE 2.0-4.2mm Better flexibility, more style options, higher work efficiency, less skin damage, and improved tattoo results. Multifunctional battery(Non-removable) ●Double-click the power button for jump start. Long press the power button for standard start. .In the active state, double-click the power button to switch to dot work mode. ●In dot work mode, short press to adjust the dot work frequency, long press to adjust the voltage, or pause and then short press to adjust the voltage.