Phonebook Memory: 100 name and number directory with copy between handsets Base and handset volume control Ringtones: 5 standard 10 polyphonic (handset only) 30 number calls list 10 Number redial list SMS Facility: for SMS text messaging to work you must subscribe to a caller display service not withhold your telephone number and not bar premium rate calls LCD Screen: Backlit Mono 4 Lines handset only GAP Compatible Range From Base: Indoor range 50m Outdoor range 300m Number of Handsets: 1 Handsfree Function Standby Time: 180hrs Talk Time: 16hrs Headset compatible Diverse repeater compatible; can be used with any Diverse base station Base settings PIN protected