About this item This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com The thinnest HR-equipped activity tracker from Garmin at 4mm thinner and more form fitting than vívosmart HR; Strap material: silicone While not in use, the discreet display disappears into the device so as not to overshadow your style Measures VO2 Max, which is widely recognized as an excellent measure of your aerobic fitness and should increase as your fitness improves Stress monitoring enables users to see periods of elevated stress or restful recovery
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