Por un escritor de hombre misterioso
Indian fitness and nutrition tracking startup Ultrahuman has fast-followed its debut smart ring last year with a second generation of the device -- which The Indian fitness tracking startup has fast-followed its debut smart ring last year with a major hardware upgrade that whittles down a slightly chunky form factor, for its original sleep & fitness-tracker, into a more svelte matte black band -- it's calling the Ring Air. So, er, Apple eat your heart out!
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