Manage both your cell phone and your landline calls from a single cordless unit with the Uniden D1780-2BT with Bluetooth® CELLLiNK™ technology. Pair up to two cell phones using a Bluetooth® connection. You can transfer 1,400 phonebook names & numbers (700 per cell phone). This system works even without a landline -- you can use it as a high-quality extension of your cell phone and enjoy excellent handset range and brilliant voice quality. Access your messages from the base, which features a large LED number-of-messages indicator, or from either of the cordless handsets. Each handset has a speakerphone built in for convenient hands-free conversations.