ITEM NAME:FlySky FS-GR3E 2.4G 3CH Receiver RC Radio System Durable For Transmitt RLL Descriptio n Specifications: Material: Advanced Plastic, Etc. Color: Black Dimensions: Antenna Length 26mm, External Dimensions 35*22*12mm Number Of Channels: 3 Suitable For Models: Car / Boat Frequency Range: 2.4055-2.475GHz Number Of Bands: 140 Receive Sensitivity: -105dBm Band Width: 500KHz 2.4G Mode: The First Generation Of Automatic Frequency Hopping Digital System Modulation Method: GFSK Input Power: 4.0-6.5V DC I-BUS Interface: None Data Acquisition Interface: None Certification: CE0678, FCC Package Included: 1* FS-GR3E Receiver (Waterproof) We offer you what you need! FlySky FS-GR3E 2.4G 3CH RC Radio Receiver System RX for GT3B GT3C Transmitter TX.FlySky FS-GR3E 2.4G 3CH RC Radio Receiver System RX for GT3B GT3C Transmitter TX. 1 FS-GR3E Receiver (Waterproof). We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.