FEATURES: ? Suitable for all purpose RC helicopters. ? Programmable/HV Brushless Servo. ? Programmable and compatible with S.Bus and S.Bus2 systems. ? Can be connected to a PC using the CIU-2/-3 USB adapter sold separately. ? Upper/middle/bottom: Aluminum Case ? 2S LiPo Suitable SPEED: 0.10 sec/60?at 6.6V 0.09 sec/60? at 7.4V TORQUE: 12.5 kgf/cm at 6.6V 173.5 ozf/in at 6.6V 13.8 kgf/cm at 7.4V 191.7 ozf/in at 7.4V SIZE: 40 mm x 20 mm x 36.6 mm 1.57 in x 0.79 in x 1.44 in WEIGHT: 54 g 1.90 oz RATED VOLTAGE: DC 6.0V-7.4V OPERATING VOLTAGE: DC 4.8-8.4V