Sorry, I don't care how good a product is, to not include a battery (in this day and age) is just plain wrong. I possibly wouldn't have minded so much of it was a AAA or a AA, but this thing uses a CR2032! Also, please don't treat me like a idiot and say "uses a CR2032" in the text - why not just tell the truth and say "battery not included" instead of being vague. If you'd have been honest, I would have thought it was my fault for not spotting it, but by this smoke and mirrors approach, I'm now annoyed. The world has moved on from "caveat emptor" Accessory-Shop - I suggest you do too...