The compact, reliable, and comfortable device uses interchangeable and rechargeable batteries for up to 75 hours of standby and 7 hours of talk time. The innovative and modern user interface ensures ease of use with effective and intuitive navigation through all menus. This handset can operate in a multi-cell solution for seamless call handover with up to 40 M700 base stations and 200 handsets, or with a single M300 base station with up to 20 handsets.