The Fysic FX-5500 makes calling easy for everyone. The extra large, backlit buttons make the device easy to use, even in the dark. It has room for up to 50 contacts, to easily get in touch with your friends. The large, illuminated display with caller ID makes it instantly clear who's calling you. You adjust the ringtone and call volume to your preference, so you won't miss a single call. It won't be necessary to cut off your conversation early, because the FX-5500 has a battery that lasts up to 10 hours. If you're busy during your conversation, you can just call hands-free.