The electric powered, 2.4GHz radio controlled, ready to fly Proto X Nano quadcopter from Estes, is the smallest you can find around.
Features:
LED light indicates front and back of the heli, and also helps in low light flying
Plastic body with window and trim detail
4-channel 2.4GHz Radio with digital trims
Four micro motors
100mAh 3.7V LiPo battery
USB charge cord
One-piece PCB frame
Available for $40 here
Due to its very small size, the Proto-X has a built-in LiPo battery that is not designed for replacement.
Attempting to remove or replace the Lipo battery will likely damage the quadcopter.
via gizmag
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