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.
Recently I've been giving the Clinique Sonic System Purifying Cleansing Brush* a whirl after being challenged by Clinique to try out the product for ten days. I'm forever heavily sceptical about introducing new products in to my skincare routine - even if it is just a tool - as the smallest change can send my skin off on one.