I got this as a gift from my brother. Very easy to connect to your android phone. Once done you can use it to read messages, check your mail, etc. You can use voice command to make a call but you need your phone to talk back. It is not a full fledged smartwatch like Apple. You can check your heart rate, pulse and it shows you how many steps you walked in a day. It is good to check notifications quickly when you are on the move.
The battery life is not good. I used the watch to its capacity from morning and by evening the battery was low. For someone who would like to use it everyday that is not a good sign. It connects to the phone through Bluetooth so if you leave your phone behind it is useful only to see time.