... decoration Can be as phone strap, can be hung on the bags,key.etc. led keychain light,led keychain,led light ... decoration Can be as phone strap, can be hung on the bags, key.etc. A good product for promotion and gift ... INSTRUCTIONThe button is at the bottom of the product.1. Turn the button on, the light on.2. Turn the button off, the light off. Special design are ...