Uploaded July 2012 | Updated September 2026, 1 week ago

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Discontinued Mathmos LED Product.

This clever little fan writes a message in the air whilst you work. The fan plugs straight in to the USB port on your computer and can be angled towards you or someone else.

The message 'STAY COOL' is created by chip controlled blue LEDs on the fan blade and is on a continuous loop which includes the words "stay cool" in 9 different languages;

English, German, French, Italian, Flemish, Chinese, Portuguese, Polish and Korean.