DTMF/FSK Caller ID system compatible 38 Incoming Calls Memory 05 Outgoing Calls Memory Green Backlit 12 Digit LCD Display Line Tapping Protection Mechanical Lock for 0 95 Call Lock & Full Keyboard Lock Checking Erasing and Call Back for Incoming / Outgoing Calls Auto add 0 in Call Back Auto Filter Local Area Code up to 5 Digit 8-Ring Melody Selectable 3-Programmable Alarm Clock Settings 3-Single Touch Memories Music on hold Two way speaker phone with adjustable volume Pre-dialing & clearing function Display of Real Time and Date in Idle mode Special Ring for VIP number Basic Calculator