Type: 3688MGWeight: 29 gramsTorque: 2.5 kg-cm @ 4.8V; 3 kg-cm @ 6VSpeed: 0.07 sec (4.8V) ¦¢ 0.06 sec (6.0V)Voltage: 4.8 ~ 6.0VDimension: 35.0 x 15.1 x 29.5 mmGear material: Brass & Aluminium alloy Wording frequency: 1520¥ìs / 333hz