The Corona DS-929MG Digital Servo is a great high quality servo
Size: 22.5x11.5x24.6mm(0.88"x0.45"x0.96")
Weight: 13.6g
Operating voltage: 4.8V~6.0V
Operating current: 200mA/60D
Operating speed: 0.11sec/60D
Stall torque: 2.0kg.cm
Dead band: ≤3uSec
Ball bearing: MR85
Gear Material: Metal
Connector wire length: 215mm
Temperature: -20 ℃ to +60℃

Please Note: 6 volts really does mean 6 volts not 7+ as is likely with 5 fully charged 2nd generation NMH cells