This is the Savox SB-2290SG Black Edition Monster Torque Brushless Steel Gear High Voltage Servo. The Savox Monster Torque servo utilizes a unique brushless motor and controller technology to boost power up to 35% over previous generation servos.
Features:
Specifications:
Torque: 6V: 555.5 oz-in; 7.4V: 694.4 oz-in
Speed: 6V: 0.16/60° sec; 7.4V: 0.13/60° sec
Dimensions (L x W x H): 40.3x20.2x38.7mm
Weight: 79.0g