Material: 316L Anti-bacterial Stainless Steel Design: Full metal, scratch-proof, cutting-edge tech meets traditional jewelry design Dimension: 7.5mm(width) * 2.5mm(thickness) Incoming Call Reminder: Auto-vibrates when receiving a call; Abnormal Health Alerts: High/Low Heart Rate, Low SpO2, Fever; Key Events Reminder: Medication Reminders, Drink Water, Birthday & Anniversaries, Meetings; Alarm Clock: Ring vibrates to alert you when the alarm time is up. What’s Included The standard retail package typically contains: Smart Ring (TM21) Portable Charging Case Magnetic Charging Dock (Desktop/Stand-style) USB-C or Micro-USB Charging Cable Charging Brick/Wall Adapter (Varies by retailer) User Documentation/Quick Start Guide Technical Specifications Feature: Waterproof Rating IP68 & 5ATM: Fully dust-proof and water-resistant. It is safe for hand washing, showering, and swimming (pool/shallow diving). Weight ~2.2 to 5.2 grams (approx. 0.005 – 0.011 lbs). Your initial figure of 0.05 lbs was likely the shipping weight; the ring itself is designed to be barely felt on the finger. Battery Type High-density Lithium Polymer (Li-Po); 15mAh–18mAh capacity. Battery Life 4–6 days of normal use; up to 25 days on standby. Charging Method Magnetic contact charging (approx. 60–90 minutes for a full charge). Connectivity Bluetooth LE 5.4 (Low Energy) for stable, long-range syncing. Ports None on the ring (sealed for waterproofing). The charging case/dock utilizes a standard USB port for power. Compatibility Requires the YOR Ring App RING App. Compatible with iOS (12.0+) and Android (6.0+).