Hobbywing Flyfun 40A Brushless ESC(BEC)

Specification
1 Output: Continuous 40A, burst 55A up to 10 seconds.
2 Input Voltage: 2-6 cells lithium battery or 5-18 cells NIMH battery.
3 BEC: Switching mode DC-DC regulator. 3A@5.25V or 3A@6V switchable by user progromming.
4 Control Signal Transmission:Optically coupled system.
5 Max Speed: 210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM.
(BLM: BrushLess Motor)
6 Size: 55mm (L) * 28mm (W) * 12mm (H).
7 Weight: 35g.