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Low-power eyepiece (20 mm)
In addition to three different siren sounds
• Red wax in blue liquid
filling the chamber and triggering the amazing reaction
WindBots: 6-in-1 Wind-Powered Machine Kit auditory Low-power eyepiece (20 mm)The power of wind makes them go and you'll have fun building 6 awesome bots that move without any batteries at all. Easy, snap together assembly needs no glue, either. Yacht, big wheel trike, drilling monster, quadruped, soaring machine and walking robot can all be set in motion with the included hand powered wind generator. Full color manual shows how its done. From Thames & Kosmos, for ages 8 12 yrs.
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