Over time I have found that you can learn to last as long as you want. If I don’t have a lot of time I can knock one out in just a few minutes. If you have plenty of time, you can go for hours because you can learn to control the speed, stroke, etc. to keep from cuming as long as you like. That is why the VK2 is so great for ‘edging’ I like being on the edge as long as possible….I love the intensity you feel.