I have tried different types of power, but I can say the best one for me is a VibeWhip. I can't give it 100%, but this is one of the best products to help you achieve orgasm. I would say it is about 2 weeks of use, but with this product you can enjoy it for almost a month. So for me it is about 3 weeks. If you take into account all the other things you need to know about the VibeWhip, that makes it almost 3 months. And for a month it's great. After you finish using the product, I recommend you to try a longer time to achieve the best orgasm you can. I have had orgasms lasting between 1 and 2 minutes, which is good, but I don't like that I feel like I'm going to vomit the second I start, and have to take my time before getting one. The vibrator is super easy to use, I was very impressed by how easy it was to use. I also really like that the wand is very strong, it vibrates me hard. And the vibrations are very accurate. So for those who are looking for a very good and strong orgasm, I recommend it! It's a good product.