The Xiaomi MI Band 4 Activity Tracker in Black is a versatile and feature-packed device that allows users to track various activities such as gym training, walking, swimming, running, and jogging. With a battery life of up to 20 days, this activity tracker by Xiaomi offers a range of features including multi-sport capabilities, Bluetooth connectivity, alarm function, stopwatch, heart rate monitoring, and sleep tracking. Compatible with both iOS and Android operating systems, this black band is a stylish and practical fitness companion for users looking to monitor their health and fitness goals effectively. No charger
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