Overview: Adopt the advanced microcomputer controller design.FSK/DTMF ID caller signal receiving compatibility Clear & beautiful character display, Three-line LCD Screen display for displaying number.100 records incoming calls memories.30 records outgoing calls memories. Automatic call back function Built-in real time clock The batteries low voltage indication. Adjustable LCD screen. Blue backlight display The batteries Low Voltage indication. Adjustable LCD Screen. With blue backlight display. Specification: Weight Approx:100.1g Size Approx:10 x 8 x 6