Get tailor-made insights and alerts to help you make better choices in real time. Equipped with a PPG sensor, you can stay on top of your body's vitals such as heart rate, heart rate variability, blood oxygen saturation, temperature and more. Armed with a 6-axis motion sensor, it captures the intracacies of your body's movements with unmatched precision. Hypoallergenic smooth inner shell, Ring AIR curates an unmatches comfort level, enhancing your tranquillity during sleep and rest. Titanium reinforced with Tungsten Carbide Carbon coating for unmatched resilience. Incredibly compact Ring AIR that's 11x lighter than a typical smartwatch. With water resistance up to 330 feet. Rechargeable, non-replaceable 24mAh LiPo battery. Battery lasts up to 6 days on a full charge. Fully charged in 3 hrs.