Features:1. The ESC has the first-class quality and high reliability.2. Strong flow resistance.3. It has multiple protection functions such as input voltage abnormality protection, battery low voltage protection, overheats protection, and throttle signal loss protection.4. It has three start modes: normal start, soft start, and super soft start, compatible with fixed-wing aircraft and helicopters.5. Accelerator stroke can be set, and compatible with various remote controllers. It has a smooth and delicate speed control feel and first-class speed control linearity.6. The maximum speed can reach 210000 RPM (2-pole motor), 70000 RPM (6-pole motor), and 35000 RPM (12-pole motor). Specification:Brand: QX-motorModel: 30A 2-3S ESCCont. Current: 30ABurst Current (10s): 40ABEC Mode: LinearBEC Output: 5V/2ABEC Output Capability: 5 servos (2S Lipo), 4 servos (3S Lipo)Battery Cell: 2-3S LiPo / 5-9 cells NiMHWeight: 37gPackage Included:1 x 30A ESC