It will produce IR light by pressing back button; It will give you electric shock while pressing front button; With keyring、 can hold key; Powered by 3 x AG13、 included
Dimensions: 3.31 in x 0.59 in x 0.59 in (8.4 cm x 1.5 cm x 1.5 cm) Weight: 0.78 oz (22 g)