The Servo model selector for 4S is included so you can easily switch between preset models.Features:Coreless motorReinforced stainless steel final gearHard alumite aluminum gearDual ball bearingsHard servo gear shaftAluminum top caseAluminum heat sink middle caseBlack cableGold plated connectorSerial CompatibleHCS CompatibleSpecifications:Torque: 31.6Kg-cm Speed: 0.11sec/60deg(@7.4V)Torque: 26.3Kg-cm Speed: 0.13sec/60deg(@6.0V)Torque: 33.0Kg-cm Speed: 0.09sec/60deg(@8.4V)Dimensions: 40.4x37.5x20mm (Standard size)Weight: 75.2gOperating voltage: 6.0~7.4V (Lipo, Life, Ni-MH)
