Billed as the world's tiniest quad-copter, the nano quadcopter from Revell is small enough to fit in the palm of your hand, but at the same time still have a decent amount of oomph to take off and fly where you want it to.Demoed to Pocket-lint at the London Toy Fair, we have to admit that the quadcopter was so nippy that we had trouble taking photos and video of it when it wasn't sitting on our hand. That's a sure sign that it is both great fun, and will no doubt be difficult to fly for the absolute beginner without some practice.The quadcopter will give you around 5 minutes of battery life for a 30-minute charge. While you'll need a couple of AAA batteries for the diddy remote control, the flying machine comes with a lithium rechargeable that charges off a USB socket.Revell tells us that the copter itself is easy to fix if it breaks because of your poor flying, although the whole thing is designed to take knocks and bumps and a spare set of rotor blades is also included. To help you avoid crashing it into random passers-by who've not seen it because of its size, the Nano Quad also features four bright blue and red lights - very handy and much needed.Working on a 2.4Ghz radio signal, the quadcopter has a range of around 50m. We weren't able to see that in action, but at the company's stand the copter was happy to fly quiet high and quiet far away from us without any bother at all.\u00a0The micro nano quadcopter is in shops now and costs around \u00a334.99.