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TURNIGY marine ESCs are built with USA IR mosFETs for long run times and less heat. Boat escs have a different requirement to air or car escs. Their need for sustained high-amp draw makes plane escs unsuitable and car escs with large amp spike capability, unnecessary. Thats why TURNIGY marine escs are designed purely for boats, and coated in anti-static then water resistant laquer to prevent shorting should the esc get wet. They can handle sustained high amp/volt loads and handle heat better than a car or plane esc. What makes this ESC better than others? -Well designed MCU, with efficient code makes for faster sync and accurate timing. -Fast clock cycle MCU combined with efficient code means 100,000rpm cpu cycle* -Efficient FETs reduce heat and deliver sustained switching at high amp/voltage. -Well designed PCB (6 layer) and circuit diagram handles high-amp without burnout. -Large motor comptability. Smooth starts, linear throttle curve. -Active water cooled heatsink that actually works. Programmable settings; Reverse Low Voltage (none/2.8v/3v/3.2v/3.4v) Brake: (none/soft/hard) Timing (0.00/3.75/7.50/11.25/15.00/18.75/22.50/26.25) Constant Current: 120A Burst Current: 240A Resistance: .0007ohm Battery: 2-6S Lipoly BEC: 3A/6v Motor Type: Sensorless Brushless Size: 94 x 33 x 18mm Weight: 91g *Speed: 100,000+rpm(2 Pole)