ENIX WIRELESS PEN 2 BATTERIESFreedom salute for tattoo artists. Weight: 167 grams Stroke: 4. 0 mm Battery life: 5 to 10 hours Battery: 2000 MAH Battery light indicator: Orange < 20% Red < 10% A minimum of 5 8 hours running time Compatible with most cartridges in the market Power on off: lights on when the machine is on, lights off when the machine turns off Default light can be chosen from 7 different colors (red orange yellow green blue teal purple) Auto timing since the machine