•【Advanced Health Monitoring】Tracks sleep patterns, blood oxygen levels, and heart rate for comprehensive health insights. •【Durable Water Resistance】IP68+5ATM waterproof rating allows for use up to 50 meters deep, suitable for swimming and snorkeling. •【Premium Construction】Crafted from stainless steel with a gel-infused design for comfort and durability. •【Long-lasting Battery】Up to 5 days of normal use or 20 days on standby with a quick 1-hour charge time. •【Smart Gesture Control】Enables hands-free interaction with social media apps and remote camera control for convenient selfies. •【Versatile Compatibility】Works with Android 9.0+ and iOS 10.0+, integrating with WeChat and Apple Health for comprehensive fitness tracking. •【Customizable Fit】Available in multiple sizes from 8 to 14 to ensure a perfect fit for every user. Specifications: •Waterproof: IP68+5ATM waterproof (wearable for diving or snorkeling, supports waterproofing at a depth of more than 50 meters) •Material/Craftsmanship: Stainless steel + glue filling process •Size: • 8 (inner diameter 18.2mm) • 9 (inner diameter 19.0mm) • 10 (inner diameter 19.9mm) • 11 (inner diameter 20.7mm) • 12 (inner diameter 21.5mm) • 13 (inner diameter 22.3mm) • 14 (inner diameter 23.0mm) •Thickness: 2.6mm •Weight: about 3.2g •Chipset: PAR2860 - ultra-low power consumption, more durable •Memory: 512KB ROM + 32 KB RAM •G-Sensor: SC7A20H •Bluetooth-compatible Version: 5.0 •MobileAPP-GPS: Yes •Heart rate sensor: HX 3918 •Battery Type: polymer pure cobalt battery •Operating temperature range: 0-50℃ •Battery Capacity: ring: 16mAh, charging case: 200mAh •Charging time: 1 hour •Theory Standby time: about 30 days •Normal using time: 3-4 days •Charging method: Charging case •Compability: Support Android 9.0 and above; IOS 10.0 and above •OTA upgrade: Support FOTA upgrade •APP: RWFIT Package included: •1 x Smart Ring •1 x Charging Case •1 x Charging Cable •1 x English Instruction Manual