MG90S is a metal geared version of the extremely popular MG90 9g servo. The servo has a universal “S” type connector, which fits most receivers/development boards etc. Weighing in at only 13.4g with dimensions of only 22.8 x 12.2 x 28.5 this servo is of a very small form factor, but it can pack a punch.

Specification
Weight: 13.4g
Dimension: 22.8×12.2×28.5mm
Stall torque: 1.8kg/cm (4.8V); 2.2kg/cm (6.6V)
Operating speed: 0.10sec/60degree (4.8V); 0.08sec/60degree (6.0V)
Operating voltage: 4.8V~ 6.6V
Temperature range: 0℃ - 55℃
Dead band width: 1us
Power Supply: Through External Adapter
Servo wire length: 25 cm

Includes servo arms and screws pictured.