Meet the Proto-X, available in six colors: black, white, red, yellow, green and purple. Not only is it the world's smallest quadcopter, it's also one of the world's lightest multi-rotor helis.
The 50 mm Proto-X is tiny, ideal for indoor flying...and it weighs only 11.5 grams, just four-tenths of an ounce! Bright, built-in LEDs make it easy to see the Proto-X in low-light conditions.
A 2.4GHz radio not only allows for interference-free flight, it makes it easy for multiple Proto-X helis to fly at once. A 3.7V 100mAh LiPo battery, USB charge cord and spare rotor blades are also included in the ready-to-fly package. All you need to add are two AAA batteries!
Requires: Two AAA batteries for transmitter
Note: You may fly this model aircraft without registering with the Federal Aviation Administration. Registration is required only when piloting recreational, unmanned aircraft weighing above 0.55 pounds.