SWITEL DET771 is a cordless phone with a digital answering machine. It is a low-radiation, energy-saving product. The phone has an alphanumeric phone book with 20 entries. It also has a time display and an alarm clock function. The phone supports Caller ID (CLIP) and has a call log with 10 entries. You can also use the extended redialing feature to redial the last 5 phone numbers. The phone has adjustable receiver volume, a mute button, and an adjustable ringing tone volume. There are 5 ring melodies to choose from. The phone also has a key lock feature.