The Sonnet is a behind-the-ear (BTE) device with a BTE processor, a battery-compartment and a coil with magnet. Available in 14 colours (click here for colour palette).
The battery-compartment contains 1 rechargeable batterie or 2 disposable batteries (675 Extra of 675 C)
The remote control allows you to change some of the settings.
To charge 1 to 4 rechargeable batteries.
The batteries nor USB cable with transfo are not included !!
This battery cover has a 3 pin euroconnector for an FM reciever. It also fits the audio cable.