Transmitter Specifications Dimension: 187 x 144 x 288mm ANT Length: 115 / 26mm (2.4GHz) Channels: 3ch Frequency: 2.4GHz Modulation: FM / GFSK Code Type: PPM / PCM Sensitivity: 1024 LCD Type: 128 x 64 Dot RF Power: less than 20dbm Low Voltage Warning: Yes DSC port: Yes (3.5mm) Charger Port: Yes Power: 12V DC Model Type: RC Car / Boat Receiver Specifications Dimension: 37.6 x 22.3 x 13mm ANT Length: 26mm Channels 3ch Frequency: 2.4GHz Modulation: GFSK Sensitivity: 1024 RF Receiver Sensitivity: -100dbm Power: 4.5 - 6V DC Model Type: RC Car / Boat This is special edition bundle with RCECHO Apps license key included for more fun!. RCECHO is a registered trademarks. Products only distributed by authorized seller.