Losing your keys is a common yet infuriating occurrence of daily life whether youve lost them down the back of the sofa or theyre playing hide and seek in the deepest darkest realms of your bag the whistle key is an absolute lifesaver just whistle and the key finder will light up and let out a beeping noise until you can be successfully reunited with those elusive keys it slots easily onto your keyring so you dont have to overload your pocket with a bulky piece of equipment lmfeatur