FYI a Pebble can go 7-10 days and it charges pretty quickly and does quite well for a smartwatch. I like to think of watches as being function first since I do

FYI a Pebble can go 7-10 days and it charges pretty quickly and does quite well for a smartwatch. I like to think of watches as being function first since I don't wear jewelry, but some people have different opinions here.