The size same as credit card and no wire needs. It is very convenient because it can place inside the wallet. A such small card may use for illumination, design is so funny.
The interior has a LED light bulb, when you need to illuminate, you just fold "Light Bulb" up then the light turns on.
If put " light Bulb" down, then the light turns off. You can use it anytime and anywhere!
Check It Out Now Best Buy - Portable Pocket LED Card Light Lamp Put in Purse Wallet