Desktop Corded Telephone Phone with LCD Display Caller ID Volume Adjustable Calculator Alarm Clock for House Home Call Center Office Company Hotel Features: Dual Mode DTMF/FSK compatible, Tone/Pulse Mode. 16 Digit LCD display, with Caller ID function, LCD contrast adjustable.             38 Incoming calls memory, 5 outgoing calls memory, and M1/M2 one touch memory. Pre-dialing Function, Pause Function, Last Number Redial, Music on hold. Speakerphone volume adjustable, 4-step Programmable Ringer Volume adjustable. 8-Ring melody selectable, 3-Progammable Alarm clock settings etc. No need for battery.   Specifications: Compatible Mode: DTMF/FSK LCD Display: 16 Digit LCD Display   Alarm Clock Settings: 3-Progammable   Calculator: Yes Speakerphone Volume Adjustable: 2-way Pause Function: Yes Last number Redial: Yes Music on Hold: Yes Pre-dialing Function: Yes Item Size: 20 * 15 * 6cm/ 7.8 * 5.9 * 2.4in Item Weight: 402g/ 14.2oz Package List: 1 * Base Unit 1 * Handset 1 * Coil Cord 1 * Line Cord