I am using this watch since last 1.5 years and I am very happy with this smartwatch. It is based on android OS which supports Android 4.3+, iOS 8.2+. It comes with 512 Mb RAM and 4 GB internal Memory. It can be connected via WiFi and Bluetooth as well. The design is really very awesome. You can monitor your daily fitness with the help of this smartwatch. You can monitor your walk, your heart beat and other health related tasks. You can see messages, mails and calls log on this watch. It gives a good battery backup.