The QALO QRNT Slim Smart Ring is a health-tracking Smart Ring designed with everyday people in mind. No matter where you are in your fitness, wellness, or health journey, QRNT can help you be a little bit better tomorrow. QRNT (pronounced "current") stands for QALO Ring with NanoTechnology. Equipped with upgraded, ultra-precise sensors, QRNT Slim packs even more health-tracking power into a 25% thinner, featherlight ring you'll barely notice you're wearing. TRACK KEY HEALTH METRICS: Sleep Stress Movement & Workouts Heart Rate Variability (HRV) Oxygen Saturation (SpO2) Skin Temperature Complete Women's Health & More FEATURES & DESIGN: Crafted ultra-lightweight, water-resistant titanium alloy. Available in brushed gold and brushed silver QRNT Slim Covers (one black + one white) are included. These soft silicone skins provide extra comfort, protection against scratches, and the opportunity to personalize your ring to suit your style Get up to 5 days of battery life with daily use. USB-C charging case included With QRNT Slim, you own your health information. All data is stored in the US, and if you decide to delete your account, all data is wiped permanently QRNT Slim natively syncs with Apple Health. Enjoy an end-to-end integration with support for steps, active energy burned, sleep, and heart rate Water resistant in fresh water to a maximum depth of 1.5 meters for up to 30 minutes FSA/HSA Eligible More features are in the works and will roll out to users automatically as they become available SIZING: QRNT Slim fits true to size and should be worn on the index, middle, or ring finger. It is most accurate when worn on the index finger of your non-dominant hand. Remember to accommodate for swelling and knuckle size - our Smart Rings do not stretch like our silicone rings. Size: Width 8.0mm; Thickness 2.2mm Weight: as light as 2.5g (size 6), up to 3.1g (size 13)