DTMF / FSK Caller ID System Compatible 38 Incoming Calls Memory 5 Outgoing Calls Memory 12-digit LCD Display Line Tapping Protection Intelligent Back Light Basic Calculator New Call LED Indication 8-Ring Melody Selectable Mechanical Lock for 0, 95 and all Numbers 2-way Speakerphone with Programmable Volume Setting 3 Programmable Alarm Clock Setting Colours: Red, Black, Silver & Black, Golden & Pink, Dark Grey & Silver.