Integrating more than 10 health management functions such as respiratory training, heart rate monitoring, blood oxygen monitoring, and sleep management, you can gain a deeper understanding of your physical and mental healthBluetooth call: Use a high fidelity waterproof speaker, Bluetooth hands-free call, display high-definition original sound, whether it's sports or driving, press the key to answer, and free your hand. Make communication more free24-hour heart rate monitoring: Support 24-hour monitoring of your heart rate, help you timely detect abnormal heart rate in your body, and care more about your heart healthSleep monitoring: Accurately monitor your different sleep stages, including deep sleep/light sleep/night wakefulness, sleep breathing quality, and big data analysis, to score your sleep quality. Evaluate sleep quality scientifically and effectively improve sleep.Specifications:Screen size: 1.85 inchesBluetooth version: BLE5.1Battery capacity: 280mAhWorking time: standby for 20 days, use for about 5 days. Charging for 2 hoursCharging method: magnetic suction line chargingWaterproof grade: IP67APP: APP QR code H Band, H Band LiteAdaptive system: Android 5.0 or above, only Bluetooth 4.0Supported languages of the bracelet: Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean, Dutch, HindiAPP display language: English, Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, KoreanPackage List:1 * Smart Watch