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1 h 10 m, 1 jan 1600 ano - The Abacus Ring

Descrição:

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

Adicionado na linha do tempo:

Innovations in Wearable Tech

ByNicholas Myers

14 dez 2017

0

0

505

Data:

1 h 10 m, 1 jan 1600 ano

Agora

~ 426 years ago

Imagens:

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