I've had this for almost four months and have to say you get a lot for the money. It has many features in terms of price and seems to be of good quality. The battery has good capacity, but, of course, loses weight if you use heart rate monitor and GPS (as you obviously have to keep the clock facing the sky a few seconds before it receives a signal). The design is also nice, but there are a few things that pull down.
It has only two buttons which make the more advanced setting you need to connect to the PC to adjust. And you MUST set the time for scheduled sessions, which will cause your session to disappear if you delay it until the following day. And I have NOT found a way to save favorite sessions, for example. 4x4 range, then it must be connected to PC every time and it is a little cumbersome. The customer service did not answer me when I asked about this. I also find that the clock is a little big (for activity measurement in everyday life).
So ups and downs are as follows:
+ Price, features, good built-in heart rate monitor, design and quality
- Customer service and bad mobile app (which allows me to connect to PC frequently)
The conclusion is that this is more an activity meter than the sports watch for serious athletes, but due to price I am very pleased.