1:technical data: mainframe: 1: working voltage: 14.4v 2: output power: =20w 3: temperature rise: =25°c charger: 1:output power: alternating current (ac) 220v, 50hz 2:output power: 14.4v, 700ma 3:filling input power: 30va battery: 1:voltage: 14.4v 2:charging time: about 3 hours 3:not nessary to be sterilized no-load speed: =16000times/min noise: = 70db material: stainless steel package: aluminum alloy box can be sterilized up to 135 centigrade weight: 1700g 2:standard configuration: 1: one mainframe 2: one charger 3: two blades: one 90 mm saw blade, one 70mm saw blade. 4: one sterilizing channel 5: one aluminum alloy box 3:technical merits 1: more powerful with long single operating time 2: resist high temperature and high pressure up to 135 centigrade 3: employ the advanced electric machinery with more sufficient power 4: improved design for changover switch making more stable performance 5: long working time 6: adopt total newly electric machinery 7: powerful, portable, variable speed control without step, precise and satble