The whistle illustrated is marketed for children aged three and over. It is made of metal and has a ‘pea’ inside, which vibrates adding the trill to the whistling sound. It is supplied with a lanyard from which the whistle can be hung around the neck.
Whistles are inexpensive and this model is widely available at under £4 and has been described as a pocket money toy. However, one retailer states that ‘ This item is not a toy and should only be used under adult supervision’. This is presumably due to the loudness of the whistle, which has been described as an ear drum piercing trill. This means it can be used to draw attention to an emergency situation, as well as being used in games.
One retailer describes a whistle game, a sort of hide and seek, in which supervisors hide and blow whistles to assist the hunters to find their positions.
There are two other items in this range – a compass and a pair of binoculars. The boxes of all the products encourage the child to become adventurers.