VIITA Active HRV Tachymeter Black, Smartwatch Made of Exquisite Materials, up to 2 Weeks Battery Life, Equipped with GPS, Heart Rate Monitoring, Water Resistant up to 330ft/100m Mesh Strap black: Buy Online
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VIITA Race HRV - The lightest Premium Smartwatch ever by VIITA Watches — Kickstarter
VIITA Race HRV - The lightest Premium Smartwatch ever by VIITA Watches — Kickstarter