Clever combination whistle with six different functions, made by Bresser in Germany for National Geographic.
This fun 10cm long gadget is so much more than being an excellent whistle. Separating out into different parts, it also shows you the temperature and the compass means you'll always know the right way to go! Unscrew the middle section to use the magnifier or admire yourself in the concealed mini mirror. Even has a torch to signal morse code or light the way in the dark. Clever.