A:AnswerThank you for your question.
We would need to know exactly which model do you own in order to provide a proper answer.
They can be similar but with different features and parts.
Please contact us on: shop.panasonic.com/contactus Mon-Fri, 9am-5pm EST
A:AnswerYes, it has a handset locator on the base unit.
Please click on the link below to see where is located:
http://help.panasonic.ca/viewing/ALL/KX-TGC350/OI/TGC350_PNQX7789YA/TGC350_PNQX7789YA.pdf#page=9
A:AnswerThank you for your request. The compatible handset model : KX-TGDA20. You can purchase it from our authorized retailers: https://shop.panasonic.com/authorized-retailers.html
A:AnswerDear customer, please refer to this link for your answer: http://help.panasonic.ca/viewing/ALL/KX-TGC350/OI/TGC364_PNQX7789XA/TGC364_PNQX7789XA.pdf#page=28
A:AnswerThank you for your question. You can block up to 30 numbers on this unit. Please refer to this link for more information: http://help.panasonic.ca/viewing/ALL/KX-TGC350/OI/TGC350_PNQX7789YA/TGC350_PNQX7789YA.pdf#page=21