R11M Smart Ring Health Sleep Monitoring Fitness Tracker - Rose Gold or 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 and stainless steel Package included: 1 x Smart Ring 1 x Charging Cable 1 x English User Manual Other things not included