Receiver board working input voltage: DC 3.6V-6V This kit is ideal for controlling high power motors and is suitable for use in tanks, ships, and cars. Notice: When the ship is remotely controlled, the remote control distance may be affected by water level and surface height differences. Remote controller RC boat and car controller Transmitter and receiver 6CH 2.4G transmitter receiver RC boat transmitter receiver Color: Black Material: Plastic Size: Receiver board dimensions: 4.5cm x 4cm x 0.9cm Package Contents: 1 x Remote control (battery not included) 1 x Receiver board 4 x Output cables 1 x Screwdriver Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in the color of the item as shown. Measurement error allowance is +/- 1-3cm.