Huawei Band 4 fitness tracker device

• A design that supports measuring the level of oxygen saturation at any time or place you want • The Huawei TruSeen 3.5 feature works to monitor the heart rate accurately, providing detailed data results, such as heart rate, heart rate zone, steps, distance, speed, calories, and more • The Huawei TruSleep 2.0 watch tracks your heartbeats during sleep to identify the four stages and analyze sleep quality • Easily choose exercises from nine modes and track your workouts