This is the Ace RC Water Cooled ESC BLC-40M For brushless motors on electric boats FEATURES: - Advanced cooling system - Top quality components endure strong current - Low voltage cutoff and overheat protection - Start modes normal, soft, and super soft accomodate most boats - Throttle range can be calibrated for all transmitters - Smooth and precise linear throttle response INCLUDES: Electronic speed control Instruction booklet SPECS: BEC output capability: 4 servos with 7.4V (2S LiPo) 5 servos with 11.1V (3S LiPo) DC Input: 2-4S LiPo (7.4-14.8V) Super BEC: 6V/3A COMMENTS: Motor leads have 4mm bullet connectors. Receiver cable has a universal connector. Battery leads have a Dean"s Ultra male connector. 8/1/12 phijwa ir/jxs