A secured transaction is a transaction that is founded on a security agreement. A security agreement is a provision in a business transaction in which the obligor, or debtor, in the agreement gives to the creditor the right to own property owned or held by the debtor.
If your brush has two speeds, and uses brush heads with slim-angled necks, then you have a Sonicare Elite. An Elite toothbrush has a thread collar screw on brush head.
It's a standard sonic toothbrush, and therefore is more akin to Sonicare models than it is the other brushes on this page. Except for this difference, it would have had a place on our Best Oral-B list. Instead, we've included it on our Best Sonicares page and compare its features to them.