... frequen:1-300Hz 2011 New Meridian Energy Pen body Vibration massage tender skin treatment equipmentMain technical parameters:1) Power ... to treat the skin. 2, A function switch and intensity control buttons. 3, A3V lithium battery and a CR2 charger. ... in well-ventilated room; 5, Transport requirements:advoid shock, severe vibration, compression, moisture, etc.; 6, The handling requirements: light-light ...