From their press release:
HS-646WP High Voltage, High Torque, Analog Waterproof Servo
HS-5646WP High Voltage, High Torque, Programmable Digital Waterproof Servo
Our new waterproof servos have what it takes to keep your radio control vehicle, airplane or robot watertight! With high torque, dual ball bearings and metal gears, both our analog and digital waterproof servos have the industry’s first IP67* rating ranking them among the most durable and reliable servos for wet conditions. Whether you are manning your power boat, bashing in the mud, directing your underwater robot, or water landing your 25% plane, the HS-646WP and HS-5646WP will dependably keep your mind at ease.
Exceed Your Expectations with Hitec!
Features:
• Metal Gear with MP First Gear • Dual Ball Bearings • 3-Pole Cored Ferrite Motor • Industry’s First IP67-Rated
Waterproof Case* IP=International Protection Code; 6=Dust Tight; 7=Immersion up to 1M
• 2-Cell LiPo Capability • Programmable Circuit
HS-646wp
Speed – 0.20@6v
Torque 133 oz-in@6v
Speed 0.17@7.4v
Torque 161 0z-in@7.4v
Dimensions – 1.65 x 0.83 x 1.57 in
Weight – 2.12 oz
HS-5646WP
Speed – 0.20@6v
Torque – 157 oz-in.@6v
Speed 0.18@7.4v
Torque – 179 oz -in@7.4v
Dimensions – 1.65 x 0.83 x 1.57 in
Weight – 2.15 oz