Pulsar is clinically proven to out-clean the leading manual and battery brushes. In addition, Pulsar removes as much plaque as brushing and flossing combined. Pulsar is fully disposable; there is no need to change any parts. The brush includes one non-replaceable AAA Duracell battery. Brush with Pulsar just as you would with a regular manual brush. Pulsar has unique vibrating MicroPulse bristles that work in two ways.