Integrated design (built-in electrolytic capacitor), completely waterproof and dustproof, suitable for all kinds of climate environments. Two-way operation mode, forward and reverse, suitable for all kinds of vehicles. High-quality materials, with strong current resistance. Use jumper cap to set ESC parameters, simple and clear. It has multiple protection functions such as lithium battery voltage protection, over-temperature protection, throttle signal loss protection, etc. Assembled class:Four-wheel Drive Use:Vehicles & Remote Control Toys (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: Metal Package Contents: 1 x electronic speed controller 25A 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.