Multiple sensors running simultaneously, heart rate sensor, blood oxygen sensor. Sleep monitoring records the complete sleep structure, monitors the whole process, records your sleep duration and identifies sleep status. Help you understand your own sleep quality through the APP's big data analysis. Blood oxygen monitoring can be more accurate in any environment. The ring is equipped with an optical sensor to enable round-the-clock blood oxygen monitoring, allowing you to better understand your body and make timely adjustments to your body. Exercise monitoring: Record calorie consumption and daily metabolism during exercise. Indoor running, outdoor running, treadmill, walking... Identify your multi-sport patterns. 7x24 heart rate monitoring By tracking your heart rate around the clock, you can understand your physical condition during the day, exercise, and relaxation. If your heartbeat appears irregular or too fast or too slow, you can self-check your physical condition in time. CPU:Pixart 2860 Bluetooth Version:BLE 5.1 Battery capacity:18mAh Working Time:About 5-7days Charing time:0.5H G Sensor:QMA6100P Heart Rate Sensor:HX3605 Charging cable:Magnet Cable (With SMT Protect IC) Waterproof Level:IP68 Charging Requirement:Charging 1A or less Function:Heart rate detection; Blood oxygen test; blood pressure detection; Remote photography; Multiple sport modes; Sleep detection (Sleep time, Sleep quality); Step count; Synchronous data to APK/APP System requirements:Android: 6.0 or above; iOS: 11.0 or above Surge protection:12V Drop requirements:refer to GB/T 2423.8 standard Vibration requirements: refer to GB/T2423.10 standard Charging temperature protection:45℃ Colour:B:Silver Material:Stainless steel Size:No.9 Package Contents: 1 * Smart Ring 1 * Charging Compartment 1 * Charging Cable 1 * Multi-language instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.