It was in a little cardboard box, which was wrapped in foam and shipped in a plastic bag. It arrived in perfect condition.
It looks exactly as shown on the website. Good quality, well made. It fits in the palm of your hand; a little over three inches long, for those of you who think imperially.
It has six different sounds. I don't think you can select one permanently; it seems to randomly cycle through them. But it's pretty loud.
It came with a 9v battery. Just like it shows in the pictures, you just unscrew the end off, connect the battery terminals, put the end back on again and you're good to go. Easy to mount on the bike too.
So... good product, well made, good price, and free delivery. Thanks MITB!