The Ultrahuman Ring Size 12 Air Silver Ring is a brand new, boxed, and sealed activity tracker designed for unisex adults. Made of titanium, this ring features optical bio-tracking sensors for measuring heart rate, with a battery life of up to 6 days. It is suitable for indoor and outdoor use, with a 1-year manufacturer warranty. The ring also includes features such as skin temperature monitoring, sleep tracking, and is designed for running and jogging activities. With a sleek silver design, this ring is perfect for those looking to track their fitness and wellbeing.
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