Let me add some pictures.
Looks pretty new, not a bracelet or anklet, but a small piece of hardware tied to a calf strap. It's very light and snug, and you don't feel it much while exercising.
It's quality, the official publicity is the former Foxconn product director to control the production of anti-collision and anti-drop, waterproof grade is also high, after-sales service is complete. You can rest assured that you can buy it, send it back when it's broken, and generally give it a new one, provided that it's within the warranty period.
It's advantage, or rather its breaking point, in its company's data service piece. Through some kind of sophisticated "inertial sensor-based motion capture and analysis technology" (I think that's what it is). It's possible to derive data about a person's physical abilities and fitness while playing soccer. The backend will present the results of the data processing in its supporting mobile app - TropsX above, after which you can see your 18 soccer skills data, and the ranking of these 18 data.
I've been lucky enough to be an internal beta user, and honestly, there are still some bugs, but it still brings a lot of fun to the life of a bunch of amateur soccer players. I'm not sure if I've ever been to a soccer game before, but I'm sure I've been to a soccer game before, but I'm sure I've never been to a soccer game before. Sometimes when I look at my scorecard and my growth track record, I feel a sense of fulfillment if one of my ability values has improved. Also, the rankings feature gives me a clearer idea of what my level is, and gives me a target to catch up with. Lastly, it provides a more pure soccer space, exclusive to me and my friends, where I can upload photos of games and comment on them, similar to the photo albums and forums in Qzone.
I heard that in the future there will be some of the latest and hottest soccer information news, and some soccer games. I'm not sure how it's going to work out, but I'll see what happens.
I hope it can do better and better, myself as the first batch of hardcore fans, can accompany it to grow, will share it to more people, so that more people enjoy the fun of data soccer!