I have gotten this shaver as a replacement for an old Hitachi. What a disappointment. The shaver's battery is terrible. I barely get 3 or 4 shaves out of it. Also, I don't use this shaver every day, so it could be the idle time drains the battery too. Also, you can't just plug it in, and start using the shaver. Power can only come from the battery, so you can't bypass it (a real bummer when the shaver is low on juice). Unlike other reviewers, I didn't find the ergonomics to be too bad. The other problem is that it takes a while to shave as well, it's slow. I got fed up, and got a Panasonic instead (and it was only forty bucks). MUCH MUCH better. I charged it once, and it's still going strong. Save your money and get a better product.