Item : B000079B5Z Customer Reviews Oral B by .. M. Peskoff (New York State) I have used the product before. The first one lasted nearly 4 years. What is good about the product is that it reaches the back teeth. It also has a 2 minute alarm. Proper use of the product to make it last, Wash the toothbrush and clean the product barrel after every use. The brushes are replaceable. I get mine at COSTCO. But everyone sells the replacement brushes. Clean as well the brush protector. Note that the brush protector item does not come with new replacement brushes. Therefore keep that item clean as well. I would assume that brushing one to three times daily wears out the batteries. For good use replace the batteries about every 90 days or sooner if the Oral B starts to slow. I use rechargeable batteries in my Oral B. Travel Brush by .. Bruce A. Attfield () This is battery operated and if your at work or on the road. This is perfect as a tool to clean the teeth well as the action will work better the conventional brushes. The rotating head offers a more effect cleaning. It is fun too. Power of the head is much lees than the units with the charger base, however is good for a quick whitening. Perfect. by .. European History Guy (Arcata, CA) I've got three of these, and they're great. They seem to last forever, but I broke one's end cap by dropping it, and I wanted a spare to leave in my travel toilet kit. The last one I received had the timer, which is kind of silly. It stutters after a minute (I timed it). One downside is the heads, which wear out and are expensive. [...] sells them in bulk, though... Excellent So Far by .. M. Reid (Louisville, KY) I have a rechargeable Oral B toothbrush, but wanted to buy an inexpensive, alkaline powered brush to use on my frequent business trips. So far this brush is performing as well as its higher-torque sibling. If the batteries last as long as they say (three months), I'll be a happy camper. get the Vitality . . . by .. trebe () Braun's competitively priced electric powered toothbrushes are very good values and reliable performers. Most models use the same rotating type replacement toothbrush heads. The Advance Power 4500PX Bright D4510, like most electric toothbrushes that use AA batteries, delivers significantly lower brushing torque than a toothbrush with a built-in rechargeable battery, such as Braun's Vitality model. The Vitality may cost a little more, but it delivers a lot more brushing power, and the high capacity battery allows for many uses between recharges. Both Braun models will do a good job, however the faster more powerful Vitality, will probably get more done in the same amount of time. Given the small price differential, and long life rechargeable battery, the Vitality would seem to be a much better value. Those who prefer a more gentle brushing action, can go with the 4500PX, or any of the multitude of AA battery powered toothbrushes available.