Specification:

Channels: 6 channels 
Modulation: DSM2/DSMX 
Band: 2.4GHz 
Voltage Range: 3.5-9.6V 
Antenna Length: Main Rx: 30mm (2); Remote Rx: 30mm (2) 
Size: 21.6*30.1*12.3mm / 0.9 * 1.2 * 0.5 inch 

Package included：

1 x AR6210X DSM-X 6-Channel Receiver