This is the worst smart watch I've purchased.
The MotoACTV is 5x more functional and is way better-- the iOS nano with Lunatik band is the best on battery but leaves out most of the MotoACTV's functions. I use the MotoACTV for working out and running and the Nano for normal day-to-day. The i'mwatch has been unable to pair to any of my 6+ phones and REQUIRES bluetooth for connectivity... I work in IT in the US and have had zero luck connecting with mine or any of my friends phone. This thing is the biggest disappointment to date with a smart watch. Avoid this one like the plague!