Graupner MZ-18 9 Channel Transmitter Set HOPPING TELEMETRY TRANSMISSION 2.4 GHz technology with two-way telemetry, updatable firmware the newest features always! Two receivers included! 3.5" full color TFT Touch LCD screen, carrying case, two receivers, Graupner neckstrap, USB firmware update cable, 4 Gb micro-SD card, and a charger Real-time sensor data?GPS/altitude, temperature, voltage, current, RPM, current draw, and programmable aural announcement/warnings 30 flight model memory; multiple flight phase settings, switch actuated; multi-binding receiver system for additional servos, reduced wiring runs Smart voice system (Speaker/Earphone) audio warnings,.mp3 files, range test, signal strength alarm? With mz, mx, and mc wireless "trainer mode"