Effortless Communication: The TTfone TT660 features a flip design for easy call management – simply open to answer and close to end, ensuring convenience and simplicity in communication. Designed for Seniors: With big buttons, talking keys, and large fonts displayed on a 2.8-inch screen, the TT660 prioritises ease of use and readability for elderly users. Emergency Assistance Button: Instantly access help when needed with the dedicated Emergency Assistance button, providing peace of mind for both users and their loved ones. The TTfone TT660 is unlocked, sim free and will work with all 2G networks including: Vodafone O2 EE Virgin Giff Gaff Tesco ASDA, Asda Mobile, BT Mobile, EE, giffgaff, O2, Plusnet Mobile, Sky Mobile, Tesco Mobile, Unlocked, Virgin Mobile, Vodafone, VOXI – NOTE this phone will not work on 3G only networks like Three, Smarty and ID Mobile Long Battery Life: Stay connected throughout the day without worrying about frequent charging, thanks to the TT660's impressive battery life.