First off, this is a very inexpensive, but cool looking watch. Be aware that the chain is cheap and the finish will rub off on your clothes if you get it wet. Biggest problem was figuring out how to change the battery. There is a small notch on the back behind the tassel. Insert a small knife (or a watch opening tool, but who has one?)along that notch and the back will just pop off. Pull out the plastic ring, replace the battery and plastic ring, then just pop the back on again.