Gen 2 Titanium Smart Ring for Women & Men, Sleep & Heart Rate Tracker, No Subscription, Size Before You Buy (Polished Rosegold, 8)

[Size Selection Guidance]: The Gen 2 features a brand-specific sizing system that differs from standard ring sizes. To ensure the best fit and optimal wearing experience, we highly recommend using the official sizing kit to determine your size before ordering. [24/7 Precise Health Monitoring]: The Gen 2 Smart Ring integrates multi-sensor technology to deliver 24/7 tracking of your sleep, heart rate, stress levels, blood oxygen saturation, physical activity, and menstrual cycle. Its ultra-light titanium body provides lasting comfort whether you're sleeping, working, or exercising, ensuring your sleep and health data remain consistent and reliable. [Sleep Breathing Rate Monitoring]: Better sleep starts with awareness. Put on the ring to monitor your breathing rate and identify any irregularities as you rest. By understanding the rhythm of your breath, you'll discover the secrets of your deep and light sleep cycles and apply those insights to enhance your rest, night after night. [Battery Performance]: Experience 5-7 days of battery on a single charge. Battery performance differs based on the ring size; sizes 11 and 12 can operate for up to 7 days. Whether you're traveling, working late, or simply living life, your ring continues monitoring. Seamless 24/7 health tracking without frequent charging. [Waterproof & Comfortable]: IP68 waterproof rating; it performs well up to 100 meters, whether from an accidental splash or a deep dive. A loose ring results in unstable readings, while a tight ring impacts comfort. The design balances fit and wearability to optimize heart rate, SpO2, sleep, and stress monitoring, helping you obtain meaningful insights, not random numbers. [Premium Titanium Construction]: Made from lightweight, durable titanium material that offers exceptional strength and corrosion resistance while maintaining all-day comfort for continuous wear during any activity