A drone and controller combo so small it can fit in your pocket? That's the promise of Wallet Drone, a new mini-quadcopter and controller/docking station combo on Indiegogo that's no bigger than a typical wallet.

The idea of a mini-quadcopter isn't new -- there are several such devices already available -- but the company claims the Wallet Drone is the world's smallest. The drone itself measures 1.57 inches by 1.57 inches by just over half an inch (4 centimeters by 4 centimeters by 1.75 centimeters), and the remote and docking station isn't much larger at 4.23 inches by 3.35 inches by 1.1 inches (10.75 centimeters by 8.5 centimeters by 2.8 centimeters).

The Wallet Drone is a cheap hobby gizmo that could be fun to fly around, plus it's small enough to be pocketable so you can take it to the park without needing to carry any extra gear. Like most micro-quadcopters, the Wallet Drone doesn't have a camera, so if you're looking for aerial photos, you should probably look elsewhere.