I had high hopes for this watch after reading all the great reviews and features it comes with. This watch had everything I was looking for. Unfortunately after using it a week, I am pretty disappointed in it. The accuracy of this watch is off. One of the main reasons I purchased this was to keep track of my sleeping patterns. Last night I went to bed at 8:50 and fell asleep shortly after (probably around 9pm). This morning when I checked the app, it tells me I went to sleep at 11:40pm and only had 8 hours of sleep when I know for a fact I had more. To make it worse, when I refreshed, it tells me then that I went to sleep at 11:23. The heart rate monitor is terrible. I was doing high impact dance aerobics and it said my heart rate was 72. My heart was beating so hard I could hear it so that was way off. If these features don't work, it makes you wonder if the other areas such as the blood pressure and the step count are accurate. In addition, I am able to control Pandora on my phone so that I could listen to music while I workout but not my favorite music player...Poweramp. The watch just changes playlists but won't actually play a song making it useless. Im not sure if the watch is to blame or if the music app is but either way, it won't do what I want it to. I also wish there was an easier way to get the screen to turn on. I usually have to swipe my finger along the screen several times to get it to turn on. On the plus side, the battery lasts long, and it charges fairly quickly via usb. It fits smaller wrists like mine and weather information seems to sync well with my phone. Due to all the accuracy issues though, its hard for me to recommend this watch.