This is the Sanwa RX-451R 2.4GHz Receiver for New Hi-Response Servo

Feature:
For: New Hi-Response Servo
Modulation : FHSS 2.4GHz
Input Voltage : 4.8V -6.0V
Dimension : 36.5 x 24.0 x 14.5mm
Weight : 9g

Include:
Sanwa Rx-451R 2.4GHz Receiver (1pc)
Instruction
Sticker (1pc)