Voice input can only be used with multi- function steering wheel Only suitable for cars with push to talk steering wheel button not suitable for hands-free facility Retrofit and upgrade kit Ericsson T39, T29, T28 Retrofit and upgrade kit Motorola V50/V3690/V3688 Retrofit and upgrade kit Nokia 6310, 6210, 6150, 6110 Retrofit and upgrade kit Siemens 45/35 series