You can control incoming call number, call time record and real-time date in LCD screen. And it supports 3 groups of alarms with different tones. Furthermore, it is powered by the telephoneline. You can also set time to be free of distraction. Features: Clear Sound - Noise cancelling function helps keep noise outside to let you have clear communications. Semi-hands-free - when you press the hands-free button, you can hear the other party's voice, but the other party cannot hear the voice here. LCD Display - LCD screen displays real-time date, call time record, incoming call number, etc. 1-99 Hours Free of Distraction - Supports 1-99 hours free of distraction. 3-group Alarms - Supports 3 groups alarms with different tones. DTMF/FSK Systems - Supports both DTMF and FSK systems, which make this desktop corded telephone suitable for different situations. Local Codes Auto Filtration - This desktop corded telephone auto filters out 8 local codes. Telephoneline Power Supply - Powered by the telephoneline. No extra power supply required. Hands-free volume cannot be adjusted, no answering machine function. Specifications: Product type: Desktop Corded Phone Material: ABS Alarm: 3-group Supported system: DTMF/FSK LCD display: Real-time date, call time record, incoming call number, etc. Call record: 50 groups( 8-digit)/32 groups( 16-digit) Ring number: 16 Local codes auto filtration: 8 codes LCD brightness: 5 levels Place: Desktop Color: Black, white for your choice Package size: approx. 21.4 * 21.4 * 6.3 cm/ 8.4 * 8.4 * 2.5 in Package weight: 618g/ 21.8oz Package List: 1 * Desktop Corded Phone 1 * Handle 1 * Handle Cable 1 * Telephoneline 1 * English User Manual