The Band 4 comes with heart rate and sleep monitoring, and it can track different activities like walking, running and cycling.The fitness tracker is water-resistant up to 50 meters and can sync with devices running Android 4.4 and iOS 9.0 and above. It comes with Blu...

The Band 4 comes with heart rate and sleep monitoring, and it can track different activities like walking, running and cycling.The fitness tracker is water-resistant up to 50 meters and can sync with devices running Android 4.4 and iOS 9.0 and above. It comes with Bluetooth 4.2 for connectivityThe fitness tracker comes with a USB-A connector, meaning you can plug it to the regular USB-A port for hassle-free charging.