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.
There are a few categories of electric toothbrushes. The main difference is how the brush moves: Rotary: The head moves in a circular motion at 3,000 to 7,500 strokes per minute. A toothbrush where the head alternates directions is called rotation oscillation.