I've been a huge fan of the screen cleaning product Whoosh, however a friend of mine who works at the Apple Store warned me that it's been pulled from Apple's shelves. Sure enough, it's gone from the online Store. He said it's specifically something to do with the Watch and that Apple employees were instructed to pull the product and not use any already open bottles of Whoosh on the Watch. He thinks it has something to do with the Sport band coating, which makes sense. Anyway, passing on the info.