Huawei Watch D2 Smart Watch

Display: 1.82-inch AMOLED screen (480 × 408 resolution, 1500 nits peak brightness) Health & Medical Tracking: Built-in mechanical inflatable airbag in the strap for accurate blood pressure measurements, ECG analysis, heart rate tracking, and skin temperature sensing Build & Water Resistance: Aluminum alloy case with a rotating crown and IP68 dust/water resistance Connectivity & Compatibility: Supports Bluetooth calling, NFC (region dependent), and pairs with Android 8.0+ or iOS 13.0+ via the Huawei Health app Battery Life: Lasts up to 6 days with regular use, or about 1 day if continuous 24-hour ambulatory blood pressure tracking is enabled