The FS-GR3E 2.4 ghz receiver is only 6.6g in weight and 37.6*22.3*13mm in size,and suit for Flyfky GT3B GT2 GT3C CT6B transmitter,Great for RC cars/Boats. Features: Reliable, interference free 2.4GHz AFHDS signal operation. Ultra light weight design. Easy to bind and very fast link-up. AFHDS 3CH Receiver. Suit for GT3B GT2 GT3C transmitter. Quick and extremely stable in performance. Specifications: Channels: 3 Channels Model type: car/boat RF receiver sensitivity: -105dbm Modulation: GFSK System type: AFHDS Sensitivity: 1024 Failsafe: yes (channel 2) Bind port: yes (channel 3) Power port: yes (VCC) Power: 4.0-6.5V DC (1.5V * 4) Weight: 6.5g ANT length: 26mm Size: 37.6*22.3*13mm Color: black Package Included: Flysky FS-GR3E Receiver with FPV Antenna tube and Bind plug