3 ms·I use mine all day, every day... fantastic device. Have you used one? Which one?by mattl 3y agoI use mine all day, every day... fantastic device. Have you used one? Which one?harkinian 3y agoI've never used one, because they have no use.mattl 3y agoHave you used a fitness tracker of any kind?harkinian 3y agoNo