Description:Screen size: 1.85 inchesBluetooth version: BLE5.1Battery capacity: 280mAhWorking time: stby for 20 days, use for about 5 days. Charging for 2 hoursCharging method: magnetic suction line chargingWaterproof grade: IP67APP: APP QR code H B, H B LiteAdaptive system: roid 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, KoreanThe language of the bracelet push: English, German, French, Italian, Greek, Latin, Spanish, Portuguese, Romanian, Polish, Russian, Ukrainian, Lusenian, Belarusian, Bulgarian, Serbian, Maxitan, Croatian, Bosnian, Hindi, Sanskrit, Nepalese, Cambodian, Vietnamese, Lao, Persian, Kurdish Pashto, Punjabi, Turkic, Berber, Malay, TurkishSpecifications:Integrating more than 10 health management functions such as respiratory training, heart rate monitoring, blood oxygen monitoring, sleep management, you can gain a deeper understing of your physical mental healthBluetooth call: Use a high fidelity waterproof speaker, Bluetooth hs-free call, display high-definition original sound, whether it's sports or driving, press the key to answer, free your h. Make communication more free24-hour heart rate monitoring: Support 24-hour monitoring of your heart rate, help you timely detect abnormal heart rate beats in your body, care more about your heart healthSleep monitoring: Accurately monitor your different sleep stages, including deep sleep or light sleep or night wakefulness, sleep breathing quality, big data analysis, to score your sleep quality. Evaluate sleep quality scientifically effectively improve sleep.Package Included:1 Smart Watch1 Instructions1 Charger