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.
3 User programmable. 
4 Multiple program methods supported: transmitter stick, LED Program Card. Very easy to program the ESC at home or at the flying field.
5 Compatible with Lipo and NiMH battery.
6 Timing can be changed to be suitable for different brushless motors.
7 Full protection: Low voltage cutoff protection / Over-heat protection / Throttle signal loss protection.

Hobbywing SKYWALKER-12A-UBEC-2A Electric Speed Control (ESC)

1 Output: Continuous 12A, Burst 15A up to 10 seconds.
2 Input Voltage: 2S Lipo, 5-6 cells NiMH. 
3 BEC: 2A / 5V Linear mode BEC.
4 Refresh rate of the throttle signal: 50Hz to 432Hz.
5 Max Speed: 210000rpm for 2 Poles BLM, 70000rpm for 6 poles BLM, 35000rpm for 12 poles BLM.
(BLM = BrushLess Motor)
6 Size: 38mm*18mm*7mm.
7 Weight: 10g.

Includes:
1 x ESC

Please explain:
Messages of this section are not monitored by HiModel, it is for review and discussion among customers only.