Description: Bidirectional 70A 2-6s UBEC 3A 5V ESC has the function of bidirectional brushless electric regulation. It is applicable to remote control vehicles/ ships/ warships/ car models/ smart cars, etc. Specifications: Item Name: Bidirectional ESC Material: Silicone Wire, Electronic Components Color: Black Size: 70*25*8mm Weight: 35g Notes: 1. When using, the remote control throttle remote lever must be in the middle position, otherwise, it cannot start. 2. There is no need to calibrate the throttle stroke. When the electric adjustment is started, if the motor starts to rotate,you can use the remote control to fine-tune the throttle to stop the motor. Package Information: PackageSize: 130*90*10mm PackageWeight: 36g Package List: 1 x Bidirectional ESC