I have put off doing a review until the very last minute in order to test this watch. I repair computers, just to give you a little knowledge that I am not confused by electronics and NEVER find them complicated. The ONLY thing I like about this watch it the band/fit. I doesn't bulge away from my arm like all the others and it snaps in which I find more comfortable. It took me almost 2 hours to finally get this connected to my android phone. I am having issues trying to keep it connected as well. I have the automatic 1 hr testing on, as well as call/text - but it won't do any of them - UNLESS it is connected to an Iphone! Works perfectly on an IPhone! I have had it for almost a week, last night was the first night that it read anything for my sleep and it said 3 mins - yes 3- of sleeo. It also has never read (I have to do it manually - auto won't work) my bp lower than 149/92 - I normailly have low bp 90s/50. And when I lay down, it says 176/105 ! Needless to say - I AM ORDERING A DIFFERENT ONE!