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.
After scrolling through the illuminated choices a few times, I settle on White, which provides two minutes of surface-stain lifting action, followed by 30 seconds of a different brushing pattern to brighten my front teeth. Philips Sonicare DiamondClean Toothbrush ($220) in black, white and pink.