What do you think a button can do? A necessary item for a shirt? An ornament? Ok. Look at the black button on my shirt. It is a spy cam rather than a button! It can be hidden under the clothes.
The button is just used to fasten the cam. And have you seen the ring around my finger? Shining, right? It is not only an ornament but the switch of the cam! Just wear it in your finger, move your hand close the button, the cam is turned on. Move your finger close the cam again, cam will be turned off. Leave there and go home, take the cam down, everything is there!
So wonderful! So easy! So fashionable! You shouldn't miss it!