Special core program for multi-rotor controllers meets various functional requirements against multi-. Specially optimized software for excellent compatibility with disc-type motors. The twisted-pair design of the throttle signal cable effectively reduces the crosstalk produced in signal transmission and makes flight more stable. Specifications: type: 40A short line version Continuous Current: 40A Burst Current (Greater than10s): 55A BEC Mode: Linear BEC output: 5V@3A (linear regulator mode - linear mode) BEC Output Capability: 4 Servos (2-4S Lipo) Battery Cell: 2-4S (Lipo) Maximum speed: 210, 000 rpm/min for 2-pole motor, 7000 rpm/min for 6-pole motor , 35, 000 rpm/min for 12-pole motor Due to different batches, the appearance, color, and printed words of the product , which does not affect its use. Material: plastic+metal colour: Black Package Contents: 1 x Brushless ESC Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.