For TTY compatible cell phones.

This pocket-sized TTY actually folds in half and snaps shut in it's own self-contained, hard plastic case. . It is a full-featured TTY that is designed to fit in your purse, pocket, or briefcase. The 32k memory stores TTY conversations, memos, and important phone numbers. The 80-character, 2-line display allows you to read the conversation with ease. You can also relax knowing the rechargeable batteries will last 7 - 10 hours. Now you can have access to the telephone wherever you go - just take along your Compact/C TTY!