R11M Smart Ring Health Sleep Monitoring Fitness Tracker - Rose Gold/18.1mm ?Sleep Analysis: It can analyze your sleep quality to help you get better sleep ?Health Monitoring and Fitness Tracking: It can monitor your 24-hour heart rate,blood oxygen saturation,making sure you know your health at all times. And it can accurately record your steps,distance and calories consumed ?Camera Remote Control: Use as a remote shutter,allowing you to take selfies or group photos without help. You can easily record the perfect shot even when you are alone ?Waterproof Design: Whether daily washing hands or taking a shower,it can provide reliable waterproof protection ?Wide Compatibility: It supports for Android 5.1 and above,for iOS 8.0 or above Specifications: ?Chip: JL AC6323 ?APP: Smart Health ?Compatible system: Android 5.1 (inclusive) and above,iOS 8.0 (inclusive) and above ?RAM: 4MB ?Screen: none ?Resolution: none ?Encoder: none ?Touch control: not support ?Bluetooth: 5.0 ?Bluetooth call: not support ?WiFi: not support ?NFC: not support ?Acceleration sensor: SC7A20H ?Gyroscope: not support ?Heart rate sensor: Goodix GH3018 ?GPS: not support ?Battery type: polymer lithium ion battery ?Battery capacity: 20mAh ?Charging method: magnetic charging ?Function: health monitoring (steps,kilometers,calories,exercise data recording,heart rate measurement,blood oxygen measurement,sleep health monitoring),smart photo taking,adding friends,multiple sports modes (running,cycling,skipping,walking,mountaineering,yoga,golf,dancing),etc ?Supported languages: English,Simplified Chinese,Traditional Chinese,Russian,Ukrainian,German,French,Italian,Spanish,Portuguese,Polish,Greek,Romanian,Hungarian,Czech,Slovak,Irish,Croatian,Swedish,Danish,Finnish,Arabic,Persian,Norwegian,Japanese,Korean,Thai,Vietnamese ?Waterproof rating: IP68 ?Charging time: about 1-2 hours ?Usage time: 3-5 days ?Standby time: 7-10 days ?Appearance material: epoxy resin + stainless steel Package included: ?1 x Smart Ring ?1 x Charging Cable ?1 x English User Manual ?Other things not included