Multi-Function Smart RingMonitor heart rate, blood pressure, blood oxygen, sleep, and track steps with this waterproof smart ring that also supports photo capture. Interactive GamingEnjoy built-in motion-sensing games through the app. Simply wear the ring and move your finger to control the game. Gesture ControlNavigate through videos with a quick double-tap and capture photos with a simple hand motion, perfect for remote selfies and group shots. Comprehensive Health Monitoring24/7 real-time heart rate monitoring, blood oxygen saturation tracking, sleep analysis, activity data recording, and stress level assessment. Professional Photography AssistantBecome your own professional photographer with the remote control photo capture feature, elevating your selfie game effortlessly. Specifications: Basic parameters Ring size (mm): No.7 17.5mm, No.8 18.3mm, No.9 19.1, No.10 20mm, No.11 20.8mm, No.12 21.6mm, No.13 22.4mm Weight: 3.5g (No. 11) Major function 1>Daily Activity: Steps, Distance, Calorie Counting 2>Health Management:Heart Rate Measurement, Oxygen Saturation, HRV Heart Rate Variability, Stress, Sleep Tracking, Multi-Sport Mode, Skin Temperature Measurement 3>Other Functions: Remote Control Photo, Find Ring, Female Physiology Reminder Hardware parameter: Chipset: Realtek Chipset Model: RTL8762 ESF App: QRing Compatible system: Android 5.1or above, iOS 8.0 or above FLASH memory: RAM104KB FLASH 512KB LCD Type: No Screen size: No Resolution ratio: No Digital crown (encoder): No Touch: No Connection parameters: BT: 5.2 BLE (Bluetooth-compatible Low Energy) Bluetooth-compatible call: No WIFI: No NFC: No Sensor: Sensor: ST LIS2DOCTR Gyroscope: No Heart Rate Sensor: Vcare VC30F-S GPS: No Battery Battery type: Lithium polymer Capacity: 14mAh (18mAh for size 11 and above) Charging mode: 200mAh Magnetic charging case App software features QRing: Step count, sleep monitoring, heart rate tracking, exercise data records Health monitoring, pressure, blood oxygen measurement Multiple sports modes, photography Supported languages: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Turkish, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay Other parameters: Dust Proof & Waterproof Level: 5ATM Charging time: About 1.5H Life time: 5-7 days of use and 15 days of standby Product language: No Strap size: No Product Material: stainless steel Package included: 1 x Smart Ring 1 x Charging Case 1 x Charging Cable 1 x English Instruction Manual