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.
I looked at Phillip Sonicare's website and they recommend every three months, which is the same as the standard replacement recommendation for a regular toothbrush. > Replace your toothbrush heads every three months for optimal plaque removal Our ...