Graupner MC-32 16 Channel Transmitter Set HoTT (HOPPING TELEMETRY TRANSMISSION) bi-directional 2.4 GHz technology with telemetry and updatable firmware 3.5" Full color high resolution TFT Touch LCD screen with specialized touch panel and user friendly interface Real-time data analysis with optional sensors, sensor board and real-time telemetry analysis for optional Brushless Control Telemetry ESCs 80 flight model memory positions and multiple programmable flight phase settings that can be individually trimmed and switch actuated Smart voice announcement system (Speaker and Earphone) for warnings and alarms in real time, playback of .mp3 files