Description:brand new and high quality Features:Remote distance: 50 meters outsideRemote control frequency: 2.4GCan control the number of motors: 4 Receiving board:Receiver board size: app. 5.6 x 3.5cm/2.2 x 1.38''Input voltage: 4-6vRemote control power supply: two AA batteries(not included) Instructions:Keep the receiver board and remote control switch in the closed state.Open the receiver board switch, open the remote control switch, and then close the remote control board, remote control red light flashes off, said the frequency of success, if the flashing immortal, please wait for a while, or all shut down Try again. Specification:Material: PlasticColor: Black,OrangeQuantity: 1 set Note:Transition: 1cm=10mm=0.39inchNo retail package.Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:1 x 2.4G 8CH Remote Control 1 x Receiver Board4 x Screws(other accessories demo in the picture is not included.) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store