Item Type: Telephone_x000D_ Color: Black, White (Optional)_x000D_ Material: ABS_x000D_ Power Supply: Telephone line power supply, no additional power supply required_x000D_ Call History: 50 Groups (8 Digits) Or 32 Groups (16 Digits)_x000D_ Fast Dial: 5 Groups_x000D_ Number of Ringtones: 16_x000D_ LCD Brightness: 5 Levels Adjustable_x000D_ Place: Lay on desktop, not support wall mounting.1LCD screen display, adjustable five-level brightness, real-time date and week display. 2DTMF\FSK dual system automatic identification. 16 ringtones are optional. 3Three groups of alarm functions can be set, and each group has different alarm sounds. 4FIASH time 90/95/100/160/180/300/600/1000ms is optional. 5Powered by telephone line, no additional power supply is needed, convenient and environmentally friendly.Telephone x 1Handle x 1Handle Line x 1Telephone Line x 1British Telephone Line x 1