This small and affordable DC crank generator features a 5V USB connection port and can be used to charge and power a wide variety of electronic devices. Just pull the hand crank out and spin it; a red LED next to the connection port will let you know that you're generating power. The unit also includes a wrist strap to prevent breakages. Bring it camping, or have one around the house handy in case of emergencies or power outtages.
Plug your Android phone and tablet or your Apple phone and iPad using your existing USB charging cable or use an included USB to 5.5x2.1 mm DC power cable to power your other devices or science project circuits.
Build a model green house and 9 other green energy-related devices with this great kit!
This SUPER Erector Construction set is one of the best you'll find anywhere!
This is a classic demonstration toy of the powers of magnetic fields!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
View the glory of space with this hi-tech telescope set!
Ever wonder how to survive in the wilderness? These cards can help!
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