Single Line Caller ID with Call Waiting 60 Message CID Memory Wide Angle LCD 3 Line Ratchet-Type Wide Angle (Super Twist) Voice Message Indication FSK 90 Volt / 24 Volt Speakerphone Mute with LED Electronic Hold 10 Direct Memories Flash Redial High Profile Ring Indicator Multi-Step Volume Control Data Port Dual Headset Jacks Standard Operator RJ Type Standard Cell Phone 2.5mm Conference- Black