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.
The Sonicare vs Oral-B match-up really pits the top two market leaders against each other. Sonicare is presented by Philips, a company with a long history of making electronic gadgets. Oral-B gets their brand recognition for the excellent manual toothbrushes they make.