Tiny and lightweight with high output power. Servo can rotate approximately 360 degrees (180 in each direction), and works just like the standard kinds but smaller. You can use any servo code, hardware or library to control these servos. Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it will fit in small places. It comes with a 3 horns (arms) and hardware. It can be used as continuous rotation servo motor by adding an external driver board.