The price of Xiaomi Mi Band 4 is BDT 2,700. Xiaomi Mi Band 4 smart fitness band watch comes with 0.95 inches, 2.41 cm, AMOLED On-cell capacitive touchscreen, 24bit colors depth and performing Android 4.4 (KitKat) operating system. It has 512 KB of RAM and 16 MB internal storage. This device does not have any camera. It was powered by a standard 135 mAh Li-polymer battery. Mi Band 4 have some extra features like 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, pool swimming; Count steps, distance, and calories burned and Health monitoring options Workout completion notifications, goal setting, sleep monitoring, heart rate monitoring, all-day heart rate checking, resting heart rate, heart rate chart, idle alerts etc.