Just received my replacement this morning. The battery was defective on my 42mm Sport. I sent in the watch last Wednesday(just the watch, no band) They got it Thursday, shipped out my new watch on Friday. It's only standard overnight shipping, not priority. The whole process for me took just over a week. It was maddening waiting the entire weekend. My delivery time(from FedEx) was by 8pm tonight, but it was in my hands by 11:15am.