The product is a Panasonic KX-TGF970 charging base unit with power supply, designed specifically for the KX-TG994SK model.  This unit includes a power adapter.

It doesn't include the handset Compatible handset are sold separately (model KX-TGFA97).

Why Use Panasonic KX-TGF970 Base Unit + Ultimate Call Blocker Together
To achieve the best protection against unwanted calls, we recommend combining Panasonic’s first-ring suppression feature (available in Panasonic base unit model KX-TGF970) with the powerful call blocking capabilities of the UBlocker.  For more details, please read this article.

Panasonic KX-TG994SK - MSRP: $169.99 (includes 3 cordless handsets )-- Click here to read manual, specs, troubleshooting.

You can also buy this model new with 3 wireless handsets in Amazon  > click here