It is not a beer bottle. It is a real horn that can make big sound. You may sell it in the rugby game, soccer game, Olympic game etcs. You can put your  company's logo, ADS on the bottle. 
It is much effective way than other ADS mediaum. Remember, you may pay thounds of dollars on TV or newspapers. But how many people do actually affected by  your ADS?

Look at beer horn, very simple count. How many pcs you have sold,then means how many people have noticed your products. The beer horn is not a  disposable product. They may use for many times. That can save you even more AD budget.

Also, you may not give it away for free. Addition charge for horn is possible. So, don't compare it with a bottle of beer or a horn. Compare to the effect and  efficiency of your AD payment. Don't get the chance lose to your competitors. We have the beer horn mould avaliable and ready to produce.