Some really cool stuff:
Telemetry Voice Announcing System, the HTS-Voice
Keep your eye on the sky and listen to what your model has to say. We are expanding the world of telemetry by introducing the HTS-Voice, our audible telemetry readout system which is designed to fit on the handle of the Aurora 9, Optic 6 and Optic 6 Sport 2.4GHz radios. When you fly with our telemetric Optima 7 or Optima 9 receivers, this system announces your model’s data via a built-in speaker or optional earphones. Compatible with any radio fitted with our AFHSS system, the HTS-Voice operates on two AAA batteries and includes a volume adjust, convenient selectable information readout, a 3.5mm earphone port and a power LED indicator. Hearing is believing!