This is the Kontronik Jazz 55-10-32 Brushless Electronic Speed Control.

****This ESC does not have BEC****

FEATURES: More features for the advanced pilot Sensorless, no sensor signals from the motor are required. Different programmable modes for airplanes, helicopters, gliders, gliders, cars, boats, competition level and reversible rotation EMF-brake with variable brake rate, can be disabled Automatic under voltage disconnection (adjustable) Switched OFF reason analyzed Smooth start up, ultra sensitive control characteristics Sensing and computing of the actual motor data Audible tones and LED for easy setup Can be used with Lithium Polymer batteries Start up protection at power up Adjustable Soft Start safety feature Anti-drift, temperature, and current overload protection Auto Programming Mode for quick and easy setup 100% Surface Mount Technology Update via internet RPM control for governing a helicopter's main rotor speed Two year limited warranty

INCLUDES: One Jazz 55-10-32 Brushless Electronic Speed Control, instruction manual, three connectors, and three sections of shrink wrap

REQUIRES: Installing in model and connecting to battery, motor, and receiver

SPECS: Number of Cells Input: 10-32 BEC: No Max Constant Current: 55A Max Surge Current: 70A Length: 2.1" (52mm) Width: 1" (25mm) Thickness: 0.42" (10.6mm) Li-Po cut off voltage: 3V/cell Weight: 1.34 ounces (38 grams)