The FS-GR3E receiver is only 6.5g 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 lightweight 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: 4.5-6.5V DC (1.5V * 4) Weight: 6.5g ANT length: 26mm Size: 37.6*22.3*13mm Color: black Package information: Package size: 12 * 5 * 1cm / 4.7 * 2 * 0.4in Package weight: 20g / 0.6oz Plastic bags Package List: 2 * Flysky FS-GR3E 2 * Antenna tube 2 * Bind plug