I use a Moto360 as well (1st gen) and no issues at all. Phone lasts all day, watch can last up to two with normal use (three and a few hours if in Airplane mode). It will, however, demand a lot of battery from the watch if you set the phone to Airplane mode or turn BT off but not the watch (not sure why, it just does... I guess it just scans and scans and scans).