This BT Advanced Quad Digital Cordless Phone has all the features you need for effortless communication. With four handsets included, you can have a phone in every room of your home. The phone operates on a frequency of 1.88 to 1.90 GHz and has a range of up to 50 meters indoors and 300 meters outdoors. The phone boasts a range of features including the ability to block up to 1000 numbers, a nuisance call blocker, a speakerphone, caller ID, and a 30 minute recording time. The black cordless phone is manufactured by BT and is perfect for any home or small office.