Features: DTMF/FSK compatible desktop landline telephone with 16 digit LCD display for home, hotel, office, call center, etc. Supports mute, flash, redial, pause, hands free, hold, back dial, anti-steal dialing functions. 50 groups 8 digits incoming call memory and 14 groups 8 digits outgoing call memory. 16 ring melodies for selection, and the ringing volume(4 levels) and speaker volume(2 levels) can be adjusted. In on hook state, you can use the calculator function to do some simple calculation. With considerate DND(Do Not Disturb) function, in DND mode, incoming ring will come only for VIP specified numbers, there will be NO ring for other ordinary numbers. Specifications: Color: Black/ white Material: ABS Item Size: 15 * 19 * 6.5cm / 5.9 * 7.5 * 2.6in Item Weight: 390g / 13.8oz Package Size: 29.5 * 21.5 * 6.5cm / 11.6 * 8.5 * 2.6in Package Weight: 480g / 16.9oz Package List: 1 * Telephone Transmitter 1 * Telephone Receiver 1 * Connection Cable 1 * Telephone Line 1 * Users' Manual(English)