This is the E-flite DS35 3.5-Gram Digital Super Sub-Micro Servo. This high speed, precise centering digital servo is perfect for electric indoor sub-micro flyers, slow flyers, small park flyers, high performance 3D models, sub-micro electric helicopters, and hand launch gliders.

Features :

Digital amplifier for superior accuracy, response and holding torque
High speed, 0.05 sec @ 60° @ 4.8V for quick control response
Precise centering - less than 1°
Lightweight, just 3.5 grams
Includes convenient clip mount and mounting hardware
Includes multiple servo arms including an extra-long 3D servo arm
JST-ZHR (1.5mm) connector is compatible with Spektrum Nanolite AR6300 receivers
Optional connector adapters are available to work with most major brand receivers

Specifications :

Size Category : Minis and Micros
Type : Digital
Application : Sub-micro and Micro-sized airplanes and helis
Torque : 4.0 oz-in (0.29kg-cm) @ 4.8V; 3.2 oz-in (0.23kg-cm) @ 3.7V
Speed : 0.05 sec/60° @ 4.8V; 0.06 sec/60° @ 3.7V
Length : 0.68 in (17.5mm)
Width : 0.25 in (6.4mm)
Height: 0.85 in (21.8mm)
Weight: 0.125 oz (3.5g)
Motor Type : Coreless
Connector Type : JST-ZHR (1.5mm)
Gear Type : Nylon
Current Draw Idle : 30mA @ 4.8V; 20mA @ 3.7V
Current Draw Stall : 350mA @ 4.8V; 230mA @ 3.7V
Voltage : 3.0V-5.0V DC
Deadband : <1μs