SG 90 Tower Pro Micro Servo Motor, Voltage: Dc 3v-12v
How an SG90 Micro Servo motor works
Amazon.com: Dorhea 5 Pcs SG90 Micro Servo Motor Mini Servo SG90 9g Servo Kit Compatible with RC Helicopter Airplane Car Boat Robot Arm/Hand/Walking/ Servo Door Lock Control : Toys & Games
Servo Motor SG-90 Basics, Pinout, Wire Description, Datasheet, and Working