Office Accessories Smart Watch Sleep Monitoring 1.85 Inches Watch For Men Women Multi-function Hands-free CallDescription:Screen size: 1.85 inches 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 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, and sleep management, you can gain a deeper understanding of your physical and mental health call: Use a high fidelity waterproof speaker, hands-free call, display high-definition 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 beats in your body, and care more about your heart healthSleep monitoring: Accurately monitor your different sleep stages, including deep sleeplight sleepnight wakefulness, sleep breathing quality, and big data analysis, to score your sleep quality. Evaluate sleep quality scientifically and effectively improve sleep.Package Included:1 * Smart Watch1 * Instructions1 * Charger