this review title is: works well but may not be environmentally friendly and the content is: i have had the oral b vitality toothbrush for about a year it really does a great job and my last dental visit was my best ever no cavities or gum issues my dentist was impressed i have tried both the single and dual action heads and have a preference for the latter it just feels like it cleans better however i have one major complaint after only a year the toothbrush has stopped charging this after i fully discharged and recharged it regularly like they say you should i suspect everything in the product works well except for the rechargeable battery locked inside however i must now throw away the entire thing charger plug and all because i cannot change the ni cd battery itselfbraun please make this product more environmentally friendly.there are other information for this review, one is this reviewer did not purchase it and the other is 1 people think this review is helpful.