I went through four of these toothbrushes (thanks to Amazon's amazing customer service and free returns), and they always had the same issue. The toothbrush would simply die, probably from water damage (a toothbrush should be waterproof) and would only last a maximum of 2.5 months. Amazon has since removed the product from their website, I'm assuming because of fake reviews (it had a 4.5 rating) and because of so many returns. It's a terrible product. If you see it for sale, DO NOT BUY.
Bottom Line: No, I would not recommend this to a friend