The Ultroner PIXIE Kit Powered By 350mAh Internal Battery, The Kit Can Support Three Output Voltage Level That You Can Switch Voltage By Pressing The Ignition Key Three Times. The Indicator Turns Red That Means Output High-grade, Blue Means The Output Middle-grade And Green Means The Output Low-grade. The Indicator Lights On Green Means Normal And Red Means Abnormal When You Insert Atomizer.