The Farrevo Horn. There are so many questions we want to ask about this product. Why would you want a personal loud hailer strapped quite so close to your ear? Do you have to look like a Bavarian landowner to use one (i.e. is it designed for yodelling only)? Can it double up as a hearing aid? Will it really replace walkie talkies? But I’m afraid that these questions will have to wait until we learn Japanese.