This is Xpert RC WR-7701 Waterproof "Mega Torque" High Voltage Brushless Servo.
Feature:
- Full waterproof
- Brushless motor design provides extremely high speed, top efficiency, and low power consumption.
- 4096 resolution and SIC (Single Integrated Circuit) for the highest performance and durability.
- Light weight design
- All Aluminum case for the best thermal dissipation and durability.
- Strong Metal Gear
- Glitch-free
- Sophisticated error correction
- High-Speed, High-precision 12-bit AD converter and CPU calculation
- Fail safe
- Over current protection
- Over temperature protection
- Start sonorant
Dimensions: 40x 37.8x20 mm
Weight: 70.3 g
Speed:
- @6.0V: .196 sec/60
- @7.4V: .158 sec/60
- @8.4V: .14 sec/60
Torque:
- @6.0V: 22.14 kg-cm (307.3 oz-in)
- @7.4V: 27.31 kg-cm (379.06 oz-in)
- @8.4V: 32 kg-cm (430.28 oz-in)
Matching Gear Set: XGS7378S
Matching Case: XP-05