Advanced Connectivity: Experience seamless control with our receivers, offering 4 channel options to suit a variety of RC models including cars, aircrafts, tanks, and boats. Voltage Feedback Feature: Keep track of your device's power status with real-time voltage return, ensuring your RC models are always operating at performance. and Reliable: Built to withstand the demands of any RC enthusiast, our receivers a reliable connection and long-lasting performance in all conditions. Product model: F-04A Number of channels: 4 Wireless frequency: 2.4GHz Working current: 20mA Receiving distance: 300-800m Input voltage: DC4V-9V Return voltage: None Gyroscope: None Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: black Material: ABS Package Contents: 1 x Receiver 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.