Self powered calculator - Out of Stock
Special Offer - £2.70 Off!
Simply shake this self powered calculator to and fro to charge the internal battery with kinetic energy from the movement. Shake the calculator 15-20 times for the motion to fully charge it, and 2-3 times if the 8 digit LCD screen starts to dim. Features include rubber keys, brushed aluminium key plate, ergonomic rubber side grips and a transparent body to display the mechanism. No batteries are needed and of course it works in low light level as it is powered purely by movement, unlike solar calculators!
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