OverviewHUAWEI WATCH D feature 2.5D curved glass that flashes and shimmers with each turn of the wrist, complementing a durable aluminum alloy frame, with two handy buttons to take you to your tasks. HUAWEI TruBP blood pressure algorithm, which is based on a cascade model and different blood pressure patterns, makes WATCH D sensitive and considerate to the wearer's every need, made margin of error within ±3 mmHg by a high-precision pressure sensor. With ECG Analysis and TruSeen 5.0+ help you make Heart Rate Monitoring. Also track with sleep, SpO2, 24/7 Stress monitoring, Skin Detection as well as 70+ Workout Modes, and personalized advice on how to get the best possible living plan.