【Stunning 2.0-Inch Ultra-Large Display】Experience superior visuals with the 2.0-inch widescreen display, featuring a crisp 385*320 HD resolution. Its seamless, aviation-grade metal body is not only wear-resistant but also exudes a premium texture and style, perfect for all occasions 【Stay Connected with Bluetooth Calling】Effortlessly connect with family and friends via the built-in microphone and speaker. The NX23 smartwatch incorporates advanced noise reduction technology to deliver crystal-clear call quality, keeping you connected even on the go 【100+ Sports Modes to Fuel Your Fitness Goals】Track your workouts with over 100 sports modes designed to suit various activities. From casual exercises to intensive training, this smartwatch helps you monitor performance and push your limits 【Advanced Health Monitoring for a Better Lifestyle】Get a holistic view of your health with features like heart rate monitoring, blood oxygen tracking, sleep analysis, and physical health assessments. Stay informed and take control of your well-being anytime, anywhere 【IP68 Waterproof and Built to Last】Enjoy your adventures worry-free with IP68-rated waterproofing. Whether it’s rain or sweat, this smartwatch is designed to withstand tough environments, offering durability and reliability Specifications: Hardware CPU RTL8763EWE FLASH 128Mb FLASH RAM+ROM 640kByte ROM 578kByte RAM LCD 2.0" IPS Screen Resolution: 320*385 Display brightness 400 lumens Touch panel G + F process Material Zinc alloy shell + Plastic back case (PC Material) + RUBBER strap Bluetooth Version BLE 5.3 Battery capacity 400mAh Stanby Time About 25days Working Time About 5days Charing time 3H G Sensor STK8321 Heart Rate Sensor HX3918 Vibration B