Optimized Performance: The Aria 35A ESC is designed for superior performance in FPV racing quadcopters and crawlers. It supports a voltage range from 3S to 6S, making it versatile for drone setups. Built-in Current Meter Sensor: This ESC features an integrated current meter sensor that provides real-time data on electrical current, enhancing your control over the drone's power system for improved flight safety and efficiency. and Reliable: Constructed with high-quality materials, the ESC ensures durability and reliability under demanding conditions, ideal for competitive racing and challenging terrains. Supported voltage:3-6S lithium battery BEC: None Dimensions: LxWxH:32x16x5MM Continuous current:35A Instantaneous current:40A Firmware: BLHeli-32 Designed for large quadcopters, large -country, fixed-wing and flying-wing high-current ESC Fast heat dissipation and stable performance The upper and lower copper strips on the front of the ESC are positive and negative poles, please do not short-circuit to cause burning (The product appearance and printed words depending on the batch, but this does not affect use) Color:As Shown Material:Metal Package Contents: 1 * 35A Brushless ESC Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.