I purchased this mouse in early April 2008 and I used it all the time. On average I spend five hours a day on my laptop and have used this mouse each time. While I expected that the battery life would be long, I have to recharge the battery every two weeks. It really likes to give a low-battery warning by interrupting whatever program you're using to say "Hey, it's time to recharge!" Now in month #3, after several recharging and only taking this mouse to the outside world once, the strolling stopped working. No warning. I've plugged it in and out and it is still unresponsive. Only buy this if you can find a cheap deal on it. I was lucky to get this at $20, but even that is too much. I gave it two stars because when it worked, it worked fine.