Function of Performance: ☆Plastic Gear for High Standard performance. ☆0.10sec/60°at 6.0V ☆9.6kg-cm at 6.0V ☆42x20.5x39.5mm ☆Weight:56g 2.Storage Temperature :-20℃~60℃ 3.Operating Temperature :-10℃~50℃ 4.Operating Voltage : 4.5 ~6.0 V