A manual brush with deep cleaning power, so it cleans better than an ordinary manual brush.* Pulsar has soft vibrating bristles and helps break up plaque between teeth. Just turn it on and brush as you would with a regular manual brush. Fully disposable. No need to change the battery or brush head. The non-replaceable Duracell battery is designed to last the lifetime of the brush head, approximately 3 months. Actual battery life may vary. *Single use - use brushing study.