- SL1100 12-Button Full Duplex Tel (Black)- Digital 12 Button Black Proprietary Telephone- Backlit 3 line, 24 character display - 2-Step adjustable angle- Programmable keys with red/green LEDs- Backlit dialpad 4 Soft keys - 9 Fixed feature keys - Navigator key - Headset port- Full duplex speakerphone- 20 number personal directory- 1000 number system/group directory - Dual-color call indicator lamp- 8 Selectable ring tones- Power saving sleep mode- Do not disturb - Call forwarding - Mute - Flash - Hold - Headset jack - 9 Foot handset cord