Philips 2-Line expandable system with digital answering system-Expands up to 8 handsets total-Dual keypad-Full LCD on base-Speakerphone on the base-Full graphic color screen on the handset-Enhanced high def voice-Caller ID, call waiting caller ID-50# Caller ID memory-200# Phonebook-Polyphonic handset ringers-Volume control (up/down)-Alarm clock- Mute/redial/flash/hold-Battery charging indication-Conference call-Explicit call transfer-Graphical user interface-Keypad lock-Personalized wallpaper-Signal strength indication-VIP group with own melody for each phonebook entry-Backlit keypad-Integrated antenna on base-Tone/pulse dialing-2.5mm Headset jack-Battery: 750 mAh, AAA NiMH rechargeable-Battery standby time up to 150 hours-Talk time up to 12 hours-Detachable belt clip-Digital answering system-30 Minute record time-Message counter on base-Black -ACCESSORY HANDSET: PHIL-SE6590B- PHILSE6591B