Feature:1. Safety arming feature: Regardless the throttle stick position, the motor will not spin after battery connected.2. Throttle calibration funtion: Throttle range can be calibrated to be compatible with different transmitters. User programmable.3. Multiple procedure methods supported: transmitter stick, LED procedure Card. Very easy to procedure the ESC at home or at the flying field. Timing can be changed to be suitable for different brushless motors.4. This is the most popular mini servo. Only weighs 9 gram and gives you a 1.5-1.7kg/cm (4.8V-6V) torque. Pretty strong regarding its size.5. Full protection: low voltage cutoff protection / over-heat protection / throttle signal loss protection.Specification:Features:Safety arming feature: Regardless the throttle stick position, the motor will not spin after battery connected.Throttle calibration funtion: Throttle range can be calibrated to be compatible with different transmitters. User programmable.Multiple procedure methods supported: transmitter stick, LED procedure Card. Very easy to procedure the ESC at home or at the flying field. Timing can be changed to be suitable for different brushless motors.This is the most popular mini servo. Only weighs 9 gram and gives you a 1.5-1.7kg/cm (4.8V-6V) torque. Pretty strong regarding its size.Full protection: low voltage cutoff protection / over-heat protection / throttle signal loss protection.Specification:ESC Parameters:Current: 40AOutput Capacity: Continuous Current 40A, Short-time Current 55A (not less than 10 Seconds)Power Input: 2-4 Lithium Batteries(Not Included)BEC Output: 5V@3A (Linear Regulator Mode - Linear Mode)Maximum Speed: 210,000 rpm for 2-pole Motor, 7000 rpm for 6-pole Motor, 35,000 rpm for 12-pole MotorSize: (Approx) 68x25x8mm9g Servo Parameters:Size: 21.5mmX11.8mmX22.7mmWeight: 9 gramsNo Load Speed: 0.12 sec / 60 deg (4.8 V)Locked-rotor Torque: 1.5-1.7kg/cm (4.8V-6V)Operating Temperature: -30~~+60 degrees CelsiusDead Zone Setting: 5 MicrosecondsWorking Voltage: 4.8V-6VMotor Parameters:KV: 1100KVSize: 27.8*32 mmWeight: 68gShaft Diameter: 4 mmAccessories: 4.0mm Prop Adapter, Motor Mount, ScrewsPackage Information:Package Size: 25*15*3cmPackage Weight: 154gPlastic PackagePacking List:1* 1100KV Motor1* 40A ESC(XT60 Plug)2* 9g Servo2* 1060 Propeller1* Some Other FittingsPackage List:1* 1100KV Motor1* 40A ESC(XT60 Plug)2* 9g Servo2* 1060 Propeller1* Some Other Fittings