Mi band 2 is fitness tracker which I am using from last 2 months. build quality is good, high class silicon rubber feels very premium, glossy finish of touch panel and screen looks nice. screen is clear and vibrant. its very light weight fitness band as a same time its durable also. it can track foot steps, heart rate, sleeping time and it can be use as a watch also. it can easily bound with mi fit app. battery backup is awesome and can last up to 20days easily bit surprising because mi band can last up to 30 days but mi band 2 have a screen. its easy to use and full value for money product.