The Flysky FS-i6 is a affordable, 6CH 2.4G radio system and also a very simple setup for your RC vehicle. The automatic frequency hopping digital system provides a strong, reliable 2.4GHz signal, so rest assured you'll always be in control. Included in the package is a 6-channel mini receiver that will fit in most vehicles. The ergonomic feel of the trasnsmitter will feel good in your hands even after long track sessions. Transmitter Specfications: Channels: 6 Model type: fixed-wing/glider/helicopter RF range: 2.405-2.475GHz Bandwidth: 500KHz Band: 142 RF power: less than 20dBm 2.4G system: AFHDS 2A and AFHDS Code type: GFSK Sensitivity: 1024 Low voltage warning: less than 4.2V DSC port: PS2; output: PPM Charger port: no ANT length: 26mm * 2(dual antenna) Power: 6V 1.5AA * 4 Display mode: Transflective STN positive type, 128 * 64 dot matrix VA72 * 39mm, white backlight. Size:174 * 89 * 190mm Weight: 392g Online update: yes Color: black Receiver Specifications: Channels: 6 Channels Model type: Airplane / Glider / Helicopter Frequency range: 2.4--2.48GHZ Band width number: 140 Transmitting power: not moer than 20dBm RX sensitivity: -105dBm 2.4G system: AFHDS 2A Code type: GFSK Antenna length: 26mm Input power: 4.0-6.5V DC Dimension: 40 * 21 * 7mm Weight: 6.4g Color: Black i-Bus interface: No Data acquisition interface: No Package Information: Package size: 23 * 21 * 10.5cm / 9.1 * 8.3 * 4.1in Package weight: 631g Package List: 1 * FS-i6 transmitter 1 * FS-iA6 6CH Receiver 1 * Bind plug