I've already had two phone watches before this clock, which had only the functions of an old phone. However, this SmartWatch has the same functions as a smartphone and can be operated without such. Big advantage over Apple and Samsung watch watch. Browser, Google Maps, Youtube, Whats App, and some apps from the Google Play store work fine. There are currently no all Play Store apps compatible with the clock, or the format is not adjusted properly. But the most important smartphone features and functioning of 150, the price in the same sector, one has the cell phone conveniently always at hand. The on / off switch must be only set to wake from sleep mode. With the camera you can make good shots and you can using GPS his jogging route dry. The battery should never be fully discharged! (This was the case with the first shipment, comes every now and then before). Two hours keeps the battery at full load: WLAN + Bluetooth + video / game, the standby time is much longer. In normal use, to get one or two days without charge. However, one should have a Li-Ion battery operate stehts between 30-70% charge, in order to achieve the longest possible duration of Laban.