The Amazfit Helio Ring is a premium smart ring engineered for peak performance and daily recovery insights. Designed for athletes, high performers, and wellness enthusiasts, it combines sleek form with smart functionality. Built from durable titanium alloy with a smooth inner resin layer, it weighs just ~3.7 g and measures only 2.6 mm thickoffering barely-there comfort 24/7. Available in multiple sizes (8, 10, 12), the Helio Ring is ultra-slim yet packed with health technology. It tracks heart rate, blood oxygen (SpO), sleep stages (including REM and deep sleep), HRV, EDA (stress monitoring), and delivers a readiness score to guide your recovery, all powered by the Zepp Appno subscription fees required. With up to 4 days of battery life, wireless charging in ~1 hour 40 minutes, and full Zepp Aura Premium access included (AI sleep coaching, guided relaxation, stress management tools), the Helio Ring seamlessly integrates into the Amazfit ecosystem or functions independently. It