Pairs up to two cell phones for high-quality sound on both your landline and cell phone calls 40dB amplification, an ideal level for those who are constantly asking the caller to repeat 6-level Tone Control which defines and enhances sound quality Slow-talk control in real time Amplified digital answering machine 100dB loud ringer with bright red visual ringer Amplified speakerphone with tone control Up to 4 more expansion handsets can be added. Amplifies landline AND cell phone calls This unique offering from Panasonic offers all the traditional benefits of an amplified phone, with a unique twist - you can use it for landline AND cell phone calls. So whether somebody is calling your landline or cell phone, you can answer through the KXTGM430B handset and experience all the benefits of 40dB amplification and tone control. If you don?t have a cell phone, or don?t plan on using this for cell phone calls, then save yourself $40 and get the KXTGM420W instead. With the Link2Cell you get the flexibility of taking calls on both your landline and cell phone! Pair up two Bluetooth-enabled cell phones and experience the same high-quality sound you?d expect from an amplified phone or pair one cell phone and use as a landline. Has Class 1 Bluetooth for extended range and power. Built-in battery back-up with a fully charged handset provides up to 13 hours talk time and 9 days standby. NI-MH rechargeable batteries are supplied in the base and handsets. The Link2Cell is the only amplified phone that we carry that also alerts you to incoming text messages. (3) KXTGMA44B Expansion Handsets in included in this kit. Up to 4 more can be added (see Accessories) Additional Features: Noise reduction for clearer calls from noisy locations 15 different ringtone options Call waiting/Caller ID Talking caller ID, keypad and phonebook 3000 phonebook entries English and Spanish LCD 3 memory buttons 2.5mm headset/neckloop jack Wall or desk mount Hearing Aid Compatible Feature Details Brand Panasonic Warranty One year warranty Color Black Weight (lbs) 4.4 Battery operated? Yes (batteries required) Batteries included? Yes Battery details (8) AAA NiMH Country of Manufacture Malaysia Corded / Cordless Cordless Line-Powered No Battery backup Yes Expandable Yes Bluetooth Yes Degree(s) of Hearing Loss Mild Moderate Severe Yes Yes Yes Amplification (dB) 40 Boost override Yes Captions No Tone Control Yes Speakerphone Yes Answering machine Yes Caller ID Screen Yes Talking Caller ID Yes Talking Buttons Yes Photo Buttons No Outgoing speech amplification No Emergency Dialing No Low Mobility No