Stun your friends, family and colleagues by showing off the recent developments in technology with the Mustard retro calculator. Despite the fact that it looks like a normal tape deck, it delivers portable number crunching on a machine that harnesses the sun's power to impressive effect. Incredibly, solar power runs the electronic digital display and the number memory storage, and, what’s more, it incorporates the new metric system to give accurate answers to 2 decimal places much faster than the human brain could! With addition, subtraction, multiplication and division capabilities, this mind-blowingly modern calculator is sure to attract much attention and jealously, especially since it also doubles as a mouse mat, in case you own one of those fancy new personal computers.
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