Additional Details ------------------------------ Product description: KX-T7735-B Features 24 Programmable Line Buttons 3-Line Backlit LCD Display (with KX-TA624 system) Automatic Redial Hands-Free Answer Back Redial Key Speaker Phone Key with LED On/Off Indicator Hold/Flash Key Auto Answer Mute Key Store Key Message Key Jog Dial Volume Control (Handset, Ring and Speaker) Intercom/Conference Key Forward/Do Not Disturb (DND) Key Program Key Pause/Transfer Key Backlit LCD Display Available in Black or White Voice Mail Key Volume Control Keys for Speaker and Handset Ringer Volume Switch - Off, Low, High Backlight Switch Speakerphone Wall Mountable Headset Compatability