Wellue has variety of sleep gadgets that are safe and effective to use. Their aims to improve the people’s daily health. They design sleep apnea monitor, anti-snore monitor, heart rate tracker and more. Most of their products performed well.

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Wellue O2Ring Oxygen Tracker


Item Weight: 4.2 ounces

Size: 1 Pack

Color: Black

Item Package Quantity: 1

Number Of Pieces: 1

Special Features: Great gift idea, multipurpose, tracks oxygen and heart rate

Usage: Depending on your preference

Batteries: 1 Lithium Polymer batteries required. (included)