Coreless Motor Design for fast speed, high efficiency, and low power consumption. 10 Bits signal resolution for smooth movements. Fast speed with high torque of 4.6kg/cm. High strength composite alloy gears with high precision and durable structure characteristics. Aluminum alloy mid case construction for instantaneous heat dissipation, maintaining servo's high efficiency. Supports digital & analog control signal. Stall torque:3.7kg.cm(4.8V) 4.6kg.cm(6.0V) Motion speed:0.13sec/60 (4.8V) 0.11sec/60 (6.0V) Rating voltage:DC 4.8-6V Dimension:35 x 15 x 29.2mm Weight:25.9g