The LG G Watch comes with a proprietary charging cradle, which until today could not be obtained from anywhere else. So if you lost the charging cradle that was a part of the G Watch bundle, you would have to borrow a friend's or walk around with a dead watch. Also, the only way to switch on the G Watch, in case it turns off, is to put it on charging. That's because LG thought it fit to exclude a power button from their first Android Wear Smartwatch.
Anyway, the LG G Watch Charging Cradle is now available on Google Play Store for $19.99.