Radio Specification:

• 4 channel
• Frequency: 2.4GHz
• Protocol: AFHDS 2A
• Operating voltage: 6V DC (4* 1.5V AA Mignon)
• Low V Alarm: below 4.2V
• Temperature: 0°C - +60°C
• Weight: 320g
• Dimensions: 190*174*89mm 

Receiver Specification:

• 2020012 - 4 channel mini receiver
• Frequency: 2.4GHz
• Protocol: AFHDS 2A
• Waterproof: Yes
• Operating voltage: 4.8V-7.4V
• Dimmensions: 35x30x13mm 
• Weight: 15g   
• Aerial length: 260mm

Scope of delivery:

• SR4S radio
• R4WP receiver
• Bind plug
• Aerial tube