Safety arming feature: regardless the throttle stick position, the motor will not spin after battery connected.
Throttle calibration: throttle range can be configured to provide best throttle linearity, fully compatible with all market available transmitters.
Programmable items:
Brake setting: brake enabled / brake disabled.
Battery type: Li-xx(Li-ion or LiPo) / Ni-xx(NiMh or NiCd).
Low voltage protection mode (cutoff mode): gradually reduce the output power / cutoff the output power.
Low voltage cutoff protection threshold (cutoff threshold): low / medium / high.
Start mode: normal / soft / very soft.
Timing: low / medium / high.
Reset: reset all the programmable items to their default settings.
Full protection features: low voltage cutoff protection / over-heat protection / throttle signal lost protection.

Specifications:
XXD A2212 1000KV brushless outrunner motor:
KV: 1000
Max. efficiency: 80%
Max. efficiency current: 4-10A (>75%)
Current capacity: 12A/60s
No Load current @ 10V: 0.5A
No. of cells: 2-3 Li-Poly
Motor size: 27.5 * 27mm / 1.1 * 1.1in
Shaft diameter: 3.17mm / 0.1in
Weight: 48g / 1.7oz

30A Brushless ESC:
Output: Continuous 30A, burst 40A up to 10 Secs.
Input voltage: 2-4 cells lithium battery or 5-12 cells NiCd/NIMh battery
BEC: 2A / 5V (Linear mode).
Max speed: 210,000rpm for 2 poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM.
(BLM: Brushless Motor)
Size: 45 * 24 * 11mm / 1.8 * 0.9 * 0.4in
Weight: 25g / 0.9oz

Packet content:
100% Brand New
4 * A2212 1000KV Brushless Outrunner Motor with Mounts
4 * 30A Build-in BEC 2A Brushless ESC
4 * Pairs of 1045L/R Propellers (Black)