Breaks up plaque between teeth. On/off buttons. Money back guarantee (If you're not satisfied, call 1-877-593-4199 within 60 days of purchase. Retain original receipt and product UPC. Fully disposable. No need to change the battery or brush head. The non-replaceable battery is designed to last the lifetime of the brush head, approximately 3 months. Actual battery life may vary.). Vibrating bristles. Why is pulsar right for you? Pulsar is a manual brush with deep cleaning power, so it cleans better than an ordinary manual brush (Single - use brushing study.). How does Pulsar work? 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. Slim handle with built-in power supply. And it's guaranteed. For more oral care information visit: www.OralB.com or call 1-800-56-Oralb (1-800-566-7252).