This is the Futaba S3776SB Micro Digital SBus2 Servo.
 
FEATURES
 
For small electric powered aircraft, This is a specific servo used for the Lightscale Jabber bikes for the front brake. Programmable and compatible with S.Bus and S.Bus2 systems
Metal output gear
 
 
INCLUDES
 
S3776SB Micro Digital SBus2 Servo
0.79" (20mm) diameter 4-Point Horn
1.7" (42.5mm) diameter 4-Point Horn
Four 2x11 Mounting Screws
 
 
SPECIFICATIONS
 
Rated Voltage: DC 4.8V - 5.2V
Operating Voltage: DC4.0 - 6.0V
Dimensions: 0.86 x 0.43 x 0.86" (21.8 x 11.0 x 21.9mm)
Weight: 0.35oz (10.0g)
4.8V 6.0V
Speed, sec/60°: 0.13 0.11
Torque: 27.8oz/in (2.0kg/cm) 33.3oz/in (2.4kg/cm)
 
Always use Futaba servo horns specifically designed for this micro
servo. Do not use conventional size horns with this servo.