Phonak invisity is a narrow band radio receiver and can be used with a suitable VHF transmitter. The device has an ergonomic shape for optimum fit in either the left or right ear canal and is small in size to ensure total discretion. The speakers voice is transmitted by RF directly to the invisity placed in the user’s ear.

Frequency : 173,45 Mhz

Band range : 169,4-176Mhz