This is the Savox SW-0230MG Waterproof Metal Gear Digital Servo. The SW-0230MG is a budget friendly waterproof digital servo capable of operating at 6.0V and 7.4V. This brushed servo features a quick speed of .13 and 111.1 oz-in of torque @ 7.4V. It combines leading edge technology with super high 12-bit (4096) resolution and metal gears for greater precision when dodging puddles. This is a great upgrade if your looking to drive your RC vehicle in any condition, including rain, sleet, or snow.

Features:
Combines leading edge technology with super high 12 bit (4096) resolution and metal gears
Waterproof
High Voltage
Brushed motor
Extremely strong metal gears ensure long-life and durability
Totally green – from materials to production, these servos are environmentally friendly.
Ideal for RC cars, trucks, buggies, and boats

Specifications:
Dimensions (mm): 41.8x20.2x38.0
Weight (g): 59
Speed:
@6.0V: .16 sec/60
@7.4V: .13 sec/60

Torque:
@6.0V: 90.3 oz-in
@7.4V: 111.1 oz-in

Gear: Metal
Bearing: 2BB
Case: Plastic
Output Shaft: 25 Tooth Spline