Design and Screen Dimensions and Weight: 44.5 x 40.0 x 9.3 mm, with a light weight of about 30.4 grams (without strap). Manufacturing Materials: Ultra-strong aluminum case, with a titanium alloy decorative bezel, and a screen protected by Sapphire Glass. Screen: 1.82-inch AMOLED type, with a resolution of 480 x 408 pixels (347 PPI), and a maximum brightness of up to 3000 nits for easy visibility under sunlight. Colors and Straps: Available in Fluoroelastomer and Sport Nylon. Sensors and Health Functions Measurement System: Operates on the developed HUAWEI TruSense system. ECG: Equipped with a side electrode for taking ECG readings directly from the wrist within 30 seconds. Integrated Sensors: Optical heart rate sensor and SpO2 measurement. Skin temperature sensor and blood pressure/stress monitoring. Depth sensor and barometer. Accelerometer, gyroscope, magnetic compass, and ambient light sensor. Sleep and Mood Tracking: Monitors sleep stages and breathing, with an Emotional Wellbeing tracking app. Sports and Resistance Positioning: Dual-band (L1 + L5) accurate GPS system with support for HUAWEI Sunflower for route tracking. Water Resistance: 5 ATM standard and IP6X dust rating. Freediving: Certified according to EN13319 standard to support freediving up to 40 meters deep. Advanced Sports Activities: Supports professional golf course mode (3D course maps) and breath-hold training for divers. Battery and Charging Battery Life: Up to 10 days for maximum usage. Up to 7 days for typical usage. Up to 4 days with Always-On Display (AOD) enabled. Charging: Supports fast wireless charging (about 60 minutes for a full charge). Connectivity and System Calls and Messages: Built-in microphone and speaker for making and receiving calls via Bluetooth, with support for quick replies. Connectivity: Bluetooth 5.2 and NFC. Compatibility: Compatible with Android devices (version 8.0 and above) and iOS (version 13.0 and above) via the HUAWEI Health app. Condition: Used Color: Black