Transmitter Specfications: Channels: 6 Model type: fixed-wing/glider/helicopter RF range: 2.405-2.475GHz Bandwidth: 500KHz Band: 142 RF power: less than 20d - Bm 2.4G system: AFHDS 2A and AFHDS Code type: GFSK Sensitivity: 1024 Low voltage warning: less than 4.2V DSC port: PS2 ...Transmitter Specfications: Channels: 6 Model type: fixed-wing/glider/helicopter RF range: 2.405-2.475GHz Bandwidth: 500KHz Band: 142 RF power: less than 20d - Bm 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 (Not included) Display mode: Transflective STN positive type,128 * 64 dot matrix VA72 * 39mm, white backlight. Size:174 * 89 * 190mm Weight: 392g Online update: yes Colour: blackReceiverSpecifications: Channels: 6 Channels PWM PPM i-Bus Model type: Aeroplane / Glider / Helicopter Frequency range: 2.4--2.48GHZ Band width number: 140 Transmitting power: not moer than 20d - Bm RX sensitivity: -105d - Bm 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 Colour: Black - Package included: 1x FS i6 6CH Transmitter 1x FS i - A6 receiver 1x Data Cable