PRIVATE WAREHOUSE 
Description
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This tandem-rotor "hand dynamo" helicopter has two rotors arranged in a crossed position. You can make the helicopter hover using the "hand dynamo" generator. The faster you turn the crank, the more power you generate! A great project for the whole family!
Details
Code:
GAK04647
Release Date:
Feb 2007
Series:
Kagaku no Tamago (Science Egg)
Item Size/Weight:
29.0cm x 21.2cm x 5.0cm / 430g
Manufacturer:
Gakken