SHR K3 Smart RingDiscreet Health. Effortless Control. Upgrade your daily life with the Ainode SHR K3 Smart Ring—an ultra-light, ceramic wearable that puts advanced health tracking and smart features right at your fingertip. Monitor your heart rate, blood oxygen (SpO2), sleep quality, and daily activity with medical-grade precision, all from a ring that’s waterproof, stylish, and designed for 24/7 comfort. With up to 7 days of battery life, wireless charging, and seamless app integration, the K3 keeps your health insights close and your hands free. Key Features: Continuous heart rate, SpO2, sleep, and activity tracking Premium ceramic build—lightweight, hypoallergenic, and 5ATM waterproof Wireless charging, up to 7 days battery life Multiple sizes for a perfect fit (17.4–22.3mm) Smart notifications, vibration alerts, and app sync (iOS & Android) Supports 16+ languages Why choose the K3?Discreet, durable, and packed with sensors, the SHR K3 is ideal for anyone who wants advanced health insights without the bulk of a smartwatch. Perfect for professionals, athletes, and anyone who values privacy and convenience. What’s in the box:SHR K3 Smart Ring, wireless charging dock, user manual.