We invented a foldable powerless smartphone soundbooster made of cardboard as a clever advertising gadget for all occasions. Concept, design, photography, advertising campaign and more.

Smarthorn is a clever advertising gadget and giveaway for all kinds of business occasions.

Smarthorn is a foldable, electroless speaker for mobile phones and phablet PCs of every type and size.
It reinforces the emerging sound by 50%+ and more.
Smarthorn is a perfect, environmentally friendly giveaway and advertising gadget – the new way of business cards, greeting and congratulations cards – the promotional flyer 4.0.
Made of high quality cardboard with splash-resistant soft feel exterior coating, you can carry the Smarthorn, laying, hanging and set on a wall or door handle.
It is ideal for traveling, at home and at work