I do take your point Delboy, but I think it would be exceedingly boring if we did not stray of topic occasionally, I am sure that Stan has gleaned loads of relevant information relating to his original enquiry, and I have had brought to my attention a very effective horn manufactured Stebel, in terms of an improvement in safety this horn looks to be infinitely superior to anything that Desmo or Lucas ever offered, granted you won't win any concours competitions if you have one fitted, but I might just take that chance. I go along with Stuart, I very rarely, if ever use a horn in a real emergency situation, I always think that you are better off concentrating on taking evasive action by whatever means rather fiddling for a little button to energise a horn that no one can hear anyway, But the Nautilus would definitely have its uses on a bike of mine, it would be great when filtering through slow moving traffic for example, you know, when you see someone a few cars in front thinking about changing lanes to gain an imaginary advantage.