This magnetic timer by #Nafiki is much larger then I thought it would be which is an added plus. It's very easy to use as you just turn it over on the back and turn slowly to the right to increase time and slowly to the left to decrease time. I also love that it's magnetic so I can place it on my refrigerator for timing certain ones of my exercises I do for rehab purposes (on my neck and shoulder). I also like I don't have to replace batteries as it is rechargeable w/ a USB cord that is included with the package. The plug in isn't but that's okay b/c I just plug the timer into the USB cord and plug that cord into my hub on my desk to recharge. Great item and so modern looking too. Will go with any decor and good for so many purposes. I like it for exercising , rehabing, and even when I need to time my kids in cleaning their rooms! For parents you'll know and understand what I mean by that! LOL! Overall for $15.99 it's a great product.