Specifications: Tube Voltage): 60kV Tube Current: 1mA Exposure Time: 0.02~2S Tube Focus: 0.3*0.3mm Frequency: 30kHz Battery: DC14.8V 6400mA Rated Power: 60VA Charger Input: AC100V-240V±10% Charger Output:DC16.8V Weight:2.2kg Size:138*165*185mm The distance from skin to cone: 130mm