This is the most popular mini servo. It only weighs 9 grams and gives you 1.5 kg.cm of torque. Pretty strong in size. Suitable for lightning robot.
Characteristics:
Operating speed: 0.3 seconds / 60 degrees
Suspension torque: 1.5 kg / cm
Temperature range: 0 C_ 55 C
Deadband Width: 10usec
Operating voltage: 4.2V ~ 6V
Suitable for all kinds of R / C toys
Connector cable length: 250mm
Package includes:
4/5/10/20/50 x SG90 9G Servo Motor