This is the Speed Passion Emotion Micro ESC and Motor Combo (5200Kv). Made from the DNA of the GT Brushless ESC series, the Emotion is one of the world’s smaller brushless speed controllers for 1/18 or 1/16 scale on and off road. The Emotion features a digital racing response system with 9 levels of adjustment, AMTS advance multi timing system and a USB update feature, and is sold with a 7800KV, 6900KV or 5200KV super light weight motor, also with fast respond technology. ESC Feature Specially designed for RC car, with excellent start-up, acceleration and linearity features Compatible with sensor-less brushless motor and with (Most sensord motor). Use top quality eletronic components to enhance the current endurance ability of the ESC. 3 running modes (Forward/Backward mode , Forward/Reverse with brake , Forward/Reverse with out brake) 4 steps of maximum reverse force adjustment Proportional ABS brake function with 4 steps of maximum brake force adjustment, 8 steps of drag-brake force adjustment and 4 steps of initial brake force adjustment. DRRS "Digital Racing Respond System" (Also called"Punch") from Level 1 "soft to Level 9 " very aggressive" Multiple protection features: Low voltage cut-off protection for lithium or nickel battery / Overheat protection / Throttle signal loss protection / Motor Blocked protection. 8 steps adjustment of "AMTS" - Advance Multi timing System design suitable for different brands of brushless motor with give you the best performance for both the ESC and motor. Waterproof and dustproof. Easily program with only one button and compatible with pocket-sized SMART ESC program card. Motor Specification: RPM per Volt, KV: 5200 RPM/ Volt ESC Specification: Cont. Current: 20A Burst Current: 100A Resistance: 0.005 ohm Suitable Car: Car, Rock Crawler, 2WD Off Road Suitable Brushless Motor: > (10000 brushless motor) Battery: 4-9 Cell NiMh or NiCd or 2-3 Cell Li-Po BEC Output: 6V/1.5A Motor Type: Sensor less Brushless Motor Diameter: 31.5mm x 27.5mm x 24mm (the height of fan is not included) Weight: 15g (Without wires) Include: 5200KV Brushless Motor Emotion ESC HeatSink Program Card