GUys, Here's a detailed description of that horn:

It is close to the shape of a nautilus shell but it is more rectangular. It is an air horn just like fiamms. It has an air compressor that looks very similar to fiamms. It is a twin tone, high and low.

All that is put together in a small package. Fiamm's on the other hand, are 3 seperate pieces. Compressor, hi tone horn and low tone horn. The nautilus is more or less rectangular. It is about the size of 3 VHS tapes put side by side.

The price does not include installation (well i'm not sure, ask Glenn) I installed it on my own in 30 mins due to my 24 volt system which is hell to wire.

The whole thing mounts with one screw. then just plug in the wires of your existing horn. Or put a relay if you wish.

Very simple very clean.

The sound is similar to that of a bus. It is also as loud. I'm sure driving through Edsa, you will hear a bus honk it's horn.

I hope this answers all your questions.