This is a High Torque, Arm-Type Sail Servo with a Metal Output Gear for boat applications requiring approximately 200 oz-in torque.
Futaba products have One-Year Warranty.

This servo can produce high-current draw from your batteries if using NiMH or LiPo batteries, make sure they are capable of delivering sufficient amps.

FEATURES:
Metal output gear and the other gears are nylon
Two Ball Bearings
3-pole motor
Sail Arm included (FSH38)-(FUTM2258) plus standard 4-point arm
Same case as S134 servo
Water and Dust resistant

INCLUDES:
One S3801 High Torque Sail Servo w/ J Connector

SPECS:
Torque: 156 oz-in @ 4.8V - 194 oz-in. @ 6V
11.2 kg-cm @ 4.8V - 14.0 kg-cm @ 6V
Transit Time: 0.30 sec/60¢X @ 4.8V - 0.26 sec/60¢X @ 6V
Arm Travel: 125¢X (under optimum conditions)
Length: 2.3" (59mm)
Width: 1.1" (29mm)
Height: 2.0" (50mm)
Weight: 3.8oz (107g)