SR05 Ultra-thin Waterproof Multifunction Bluetooth Health Monitoring Smart Ring, No Charging Case - Tarnish/Size 12 •Heart Rate: App-initiated heart rate test/all-day dynamic heart rate trend and data analysis/heart rate data analysis/last 7 heart rate measurement trends/heart rate history data •Sleep: Sleep data statistics, sleep ratio, sleep score, sleep analysis, average sleep heart rate, etc. •Blood Oxygen: App-initiated blood oxygen test/last 7 blood oxygen data/last 7 blood oxygen saturation measurement trends/blood oxygen history data •Gesture Control for TikTok: The smart ring allows you to control the TikTok app through gestures, offering a convenient and innovative experience without touching the phone screen. It enables browsing videos, webpages, shopping, etc. •Gesture Photography: Capture beautiful moments effortlessly anytime and anywhere with this innovative design. The smart ring allows remote control for photography, making it easy to take selfies and professional photos •5ATM Depth Waterproof: Fully enclosed structure, 5ATM level waterproof technology, swimming, diving or snorkeling can be worn, support 50 meters depth waterproof, to meet your various waterproof needs •Sports Modes: Support a variety of sports, including walking, running, cycling and other sports Specifications: •Material: Titanium alloy •Size: • 7 inner diameter: 17.4mm • 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 •Thickness: 2.5mm •Weight: about 2.5g •Main Chip Model: Dialog DA14531 - Ultra-low power consumption for longer battery life •Storage Capacity (ROM+RAM): 128kb ROM + 96Kb RAM •Sensor: SC7A20 •Bluetooth Version: 5.1 •Supports APP GPS Data: Yes •Heart Rate Sensor Model: HX3602 •Battery Type: Polymer Pure Cobalt Battery •Operating Temperature: 0-50℃ •Battery Capacity: 14mAh •Charging Time: 2 hours •Theoretical Standby Time: 10-15 days •Usage Time: 7-9 days •Charging Method: Magnetic Charging •Compatibility: Supports Android 5.0 and above; iOS 10.0 and above •Operation Definition: Ring without touch and buttons; App initiates sports and function tests •Multi-Sport Mode: Support Multiple sport modes •WeChat Sports/for Apple Health: support •OTA Upgrade: Supports FOTA upgrade •APP: Jring Package included: •1 x Smart Ring •1 x Charging Cable •1 x English User Manual