This was a pretty cheap watch to keep my activities in check, the app isn't the greatest, though it does the job but the watch has been pretty faultless for the price.Accuracy on the functionality, such as the BP monitor have been very good, within a few digits when comparing to a proper arm type monitor, same with the pulse and oxygen level readings, all have been very good and accurate.it's also fairly easy to use, you can view the online video by using the QR code in the handbook, and the first charge with me messing with the watch most of the time, has lasted a good 5-6 days before dropping below 20% battery in normal mode.In the box you get the metal strap (if that is the model you are going for) and a rubberised strap (which makes for easier use if doing activities over the metal one), a cleaning cloth, the manual, a charging cable and a few other small items for adjusting the metal bracelet.Overall in the several days of ownership, it has done the job well and I have no issues with it.