Unboxing the Xiaomi Mi Smart Band 4 you will find the fitness tracker, replaceable bands, quick start guide, and a charger. This fitness tracker now has a fully AMOLED color display, increased resolution, more accurate, and a 0.95-inch screen. It is a touch screen and very visible under the sunlight. Also, it supports Bluetooth 5.0 and pairs with almost every android smartphone. It has a 135mAh battery that will last for more than 21 days. A 512 KB of ram, 16 MB storage, and six-axis sensors for fitness and sports tracking make this device the top choice. The Xiaomi Mi Smart Band 4 can reply to messages, answer calls, and supports contactless payments if you have the Chinese model.
Great battery life
Not water resistant