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.