A:AnswerYes, they include (qty 4) AAA rechargeable Ni-MH batteries. Each handset requires 2 batteries. You cannot use alkaline batteries. According to the instructions.
A:AnswerThis unit is hearing aid compatible. It doesn't have a volume boost. For this we recommend you our Amplified Phone Systems: shop.panasonic.com/cordless-corded-telephones/amplified-telephones, they have a loud and clear Volume Boost control for amplified caller voice volume and a loud base unit Ringer. For further assistance you can reach out to our consumer support via chat: shop.panasonic.com/contactus
A:AnswerNo, it is not. You can check our different models that are headset compatible here: shop.panasonic.com/cordless-corded-telephones/cordless-telephones#prefn1=features&prefv1=Headset%20Jack&srule=newest&nextIndex=0¤tOption=Headset%20Jack
A:AnswerThank you for your question. In order to better assist you please reach out to our Live Chat support on shop.panasonic.com Mon-Fri, 9am-5pm EST.
A:AnswerDear customer, thank you for your question. You cannot select different ringtones to your contacts. You can assign different ringer tone to your groups.
Please see a more detailed answer below:
http://help.panasonic.ca/viewing/ALL/KX-TGD510/OI/TGD510_PNQX8349YA/TGD432_PNQX8349YA.pdf#page=17
A:AnswerThis Phone System is White. The black phone system model comes with 5 handsets and it is KX-TGD535M: https://shop.panasonic.com/cordless-corded-telephones/cordless-telephones/KX-TGD53.html?dwvar_KX-TGD53_handsets=5&Quantity=1
A:AnswerDear customer, thank you for your question.Yes, the ringer can be turned off. Please see a more detailed answer on the link below: http://help.panasonic.ca/viewing/ALL/KX-TGD510/OI/TGD510_PNQX8349ZA/TGD510_PNQX8349ZA.pdf#page=10
A:AnswerDear Steve, thank you for your question. You can press the 0 key on each handset until they beep to turn the ringer off or on. To turn the ringer on and off on the base unit you need to press and hold the (-) volume key until the unit beeps.
A:AnswerDear customer, thank you for your question. Unfortunately, this product is not compatible with headphones.You can check our different models which are compatible here: https://shop.panasonic.com/cordless-corded-telephones/cordless-telephones#prefn1=features&srule=newest&prefv1=Headset%20Jack&nextIndex=0¤tOption=Headset%20Jack