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1 h 10 m, 1 ene 1600 año - The Abacus Ring

Descripción:

The Abacus ring was a very early version of the calculator watch, dating back to the Qing Dynasty in China.

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Innovations in Wearable Tech

ByNicholas Myers

14 dic 2017

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505

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1 h 10 m, 1 ene 1600 año

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