No worry about the order and the delivery time (2 days) but on arrival, batteries, corresponding in every respect to the product presented on the site do not work (at least 7 of the 10 package, having 3 left unpacked and therefore not testable by the seller as a token of good faith). Bad batch, manufacturer scam? I exclude that of the seller and the packaging intact on arrival and saw the package, you can put batteries in it without this way ...