A few years back, I inadvertently called out two friends who had Tags (I have one). Anyhow, I had to have the battery replaced and sent it off to the Tag service center. Until I got it back, I had a bill of $120.00. Naturally, I felt as if I got bent over and took one up the rear. Anyhow to my friends who also wore what looked like Tags. I complained to one about the cost of changing the battery (the watch was also cleaned and something else replaced), and that friend very sheepishly said his watch was a fake. Interesting, as I didn't think this fellow a poser! So, to my other friend, prepared with the knowledge of outing the first, I said the same thing. He very unabashedly said his Tag was a fake and that he would never pay the cost of the real deal (although he clearly could have, but the first guy couldn't). I told him I was a dumb ass that did pay for the real deal and at an authorized store to boot. Takes all kinds. Most high-end jewelry stores will replace the battery for you (especially if they aer authorized Tag dealers) at a much lower price point.