The exquisitely designed Philips D4551 cordless phones boasts premium detail alongside functions, such as an answering machine, crystal clear sound and metal-plated keys. Its as convenient as it should be, with up to 16 hours of talk time on a single charge, Caller ID, so you know who is charging and up to 30 minutes of messages on your answering machine. The D4551 features HQ-sound, offering high quality acoustic engineering for superb sound and MySound profiles to match your sound preference. Mysound profiles brings back personality to every conversation by allowing you to choose the audio profile that best matches your sound preferences. Clear, will make voices sound crisper and clearer; soft - for friendly, softer tones; warm - to make voices sound welcoming and warm. Multiple privacy settings - black list restricts receiving calls from specific numbers or starting with certain digits, keeping you away from unwanted calls. You can block 4 sets of numbers. Telephone information: Last number redial. Caller ID. Call log. Call divert. Handsfree facility. Speaker and ringer volume control. Large buttons. Up to 16/ hours talktime/250 hours standby. Up to 50m indoor range/300m outdoor range. Out of range indicator. Low battery indicator. Nuisance call blocking. Answer machine: 30 mins recording time. Personalised recording facility.