{"product_id":"u21-2-2-inch-square-screen-ecg-heart-rate-detection-bluetooth-compatible-call-sports-smart-watch-with-sleep-monitor","title":"U21 2.2 Inch Square Screen ECG Heart Rate Detection Bluetooth-compatible Call Sports Smart Watch with Sleep Monitor","description":"\u003cul\u003e\n\u003cli\u003e【Advanced Health Monitoring】Features ECG+PPG dual-engine hybrid lead technology with FITBLOOD 4.0 dynamic blood pressure monitoring, providing comprehensive health data including heart rate, blood oxygen, body temperature, and blood glucose trend analysis for complete wellness tracking.\u003c\/li\u003e\n\u003cli\u003e【Premium Display \u0026amp; Design】Equipped with a 2.2-inch curved 3D flexible AMOLED screen with 320*385 resolution, extending to the edge of the strap for an immersive visual experience, housed in an ultra-thin aviation aluminum alloy body for comfortable all-day wear.\u003c\/li\u003e\n\u003cli\u003e【Comprehensive Sleep Analysis】Six-level sleep monitoring with deep analysis and detailed sleep records, helping users understand and improve their sleep quality patterns for better overall health management.\u003c\/li\u003e\n\u003cli\u003e【Bluetooth-compatible Calling \u0026amp; Communication】Independent calling functionality with contact management, dialer, and call handling capabilities, ensuring you stay connected without needing to reach for your phone.\u003c\/li\u003e\n\u003cli\u003e【100+ Sports Modes \u0026amp; Fitness Tracking】Supports extensive workout tracking including running, cycling, outdoor activities, indoor training, dance, and martial arts, with precise motion sensors for accurate fitness data recording.\u003c\/li\u003e\n\u003cli\u003e【Long Battery Life \u0026amp; Durability】Ultra-long 15-day standby time with 7-day regular usage, IP67 waterproof rating suitable for swimming, and magnetic charging for convenient power management.\u003c\/li\u003e\n\u003cli\u003e【Multi-Language Global Support】Watch supports 31 languages including Chinese, English, Japanese, Korean, German, French, Spanish, and more, with app compatibility across 150+ countries and regions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: U21\u003c\/li\u003e\n\u003cli\u003eMain Chip: JL7013A6 + 128M Flash\u003c\/li\u003e\n\u003cli\u003eScreen Size: 2.2-inch curved screen\u003c\/li\u003e\n\u003cli\u003eScreen Resolution: 320*385 IPS\u003c\/li\u003e\n\u003cli\u003eMaterial: Aviation aluminum alloy case with silicone strap\u003c\/li\u003e\n\u003cli\u003eBluetooth-compatible Version: 5.3\u003c\/li\u003e\n\u003cli\u003eBattery Capacity: 330mAh lithium polymer battery\u003c\/li\u003e\n\u003cli\u003eStandby Time: 15 days\u003c\/li\u003e\n\u003cli\u003eWorking Time: 7 days (light usage)\u003c\/li\u003e\n\u003cli\u003eCharging Time: 2 hours\u003c\/li\u003e\n\u003cli\u003eG-Sensor: Jufly RA3220\u003c\/li\u003e\n\u003cli\u003eHeart Rate Sensor: Goodix 3228\u003c\/li\u003e\n\u003cli\u003eVibration: Motor vibration reminder\u003c\/li\u003e\n\u003cli\u003eCharging Method: Magnetic charging\u003c\/li\u003e\n\u003cli\u003eWaterproof Level: IP67\u003c\/li\u003e\n\u003cli\u003eApp Name: Hband\u003c\/li\u003e\n\u003cli\u003eSport Modes: 100+ including running, cycling, outdoor activities, indoor training, dance, and martial arts\u003c\/li\u003e\n\u003cli\u003eWatch Support Languages: 31 languages including Simplified Chinese, Traditional Chinese, Japanese, Korean, English, German, French, Italian, Spanish, Portuguese, Russian, Arabic, Vietnamese, Indonesian\u003c\/li\u003e\n\u003cli\u003eApp Support Languages: 150+ global languages including English, Chinese, Korean, German, Japanese, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Persian, Polish, Turkish, Czech, Slovak, Hungarian, Arabic\u003c\/li\u003e\n\u003cli\u003eProduct Size: 57.08*45.10*8.86mm\u003c\/li\u003e\n\u003cli\u003eProduct Weight: 79g (main unit), 89g (complete watch)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePackage included\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e1 x Watch\u003c\/li\u003e\r\n\u003cli\u003e1 x Charging Cable\u003c\/li\u003e\r\n\u003cli\u003e1 x English User Manual\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003ctable\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eCertificate\u003c\/td\u003e\n\u003ctd\u003eCE-RED,CE-RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003ePackaging Type\u003c\/td\u003e\n\u003ctd\u003eColored Box\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003ePlug Type (For 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