A:AnswerHello! The base unit, where the answering machine, needs to be plugged into an outlet, it does not run on batteries. This part alone cannot be purchased separately. -M
A:AnswerWe would need more information in order to have a better understanding of your inquiry. If you’re open to discussing it further, please contact Support Team via Live Chat on the Panasonic Website, Contact Us option, Mon-Fri, 9am-5pm EST. -M
A:AnswerHi! We encourage you to check the following guide for compatible Bluetooth headsets https://eng-ca.faq.panasonic.com/app/answers/detail/a_id/57187/kw/bluetooth/p/7 Getting audio from the phone to the headset while placing the call would not be possible. -G
A:AnswerThe model shown in the picture is one I just bought. The phones and charger stands are white and rose gold as shown, but the cords are gray/silver gray, and the electrical plug is black.
I can't compare the sound quality as I've never owned another Panasonic product, but in general I think the sound is quite good and sufficiently adjustable to the individual.