microEar VHF RECEIVERS
The microEar VHF radio receivers are, despite having been on the market for
over ten years, the smallest narrow-band RF receivers in the world. Fitted with
just a single A10 or A13 battery (BTE version), they can receive for over 30
hours. Depending on the power of the transmitter, information can be sent
directly to the ear of a wearer over a distance of several hundred metres
without requiring a single cable or any other piece of equipment. Automatic
squelch circuit, noise filter, high sensitivity, automatic frequency control
– all these features and more in a unit weighting less than 5g. A feather
weight with the making of a champion.

Mo http://www.army-technology.com/contractors/navigation/phonak/