The MPHS-125 is suitable for older phones as illustrated here.

Mobile Phone Headset

This is a version of the Ferrosound The Original Silent HeadphonesTM inductive Headset, designed for use with a wide range of mobile phones including many of the older models still in use (as illustrated).

Used with modern state-of-the-art phones it offers true stereo compatibility for people who wear two hearing aids. If you use only one hearing aid, but have normal hearing in your other ear, choose only one side silent and the other side normal.

A neat microphone hangs below the phones with a remote switch to begin or end your call. No adapter is necessary; however, you will need to supply the make and model number of your mobile phone with your order.

The phone shown is simply for illustration. This product is available, custom-made, for any mobile phone on the market.