Well there's a clue in the name of this cake of what it produces. Basically if you want 81 lots of BOOM! then this is for you.
This ear-splitting firework really does what it says on the tin. Here comes the boom has been designed with just one thing in mind: producing 81 of the loudest possible breaks.
If you want one of the noisiest fireworks in the UK, then you've found it.