This may be a bit of a stupid question but I cannot find an answer anywhere. How far away from you phone can you be for the watch to still work. I would like to wear it for going out for walks and not have to drag my 6+ with me. I am so close to wanting to buy one, I stated I would not play the Apple game of ordering like I did for the phone and would patiently wait for them to be in the store. My store has the one I want in stock.