Mi band 2 is a fitness, sleep and heart rate tracker. With a retail price of €20, it is extremely affordable yet with rich features and high built quality. Its slim form factor, lightweight (19g), soft material, and water-resistance allows the user to comfortably wear it 24/7. The OLED display offers essential information such as time, caller ID, steps. The display is also hidden underneath the black front panel to achieve a seamless and integrated appearance. The metal plate with turned texture is not only the visual highlight of the product but also serves as a touch button. The user can switch between information by simply tapping it. The battery lasts 20 days with one charge.