As fascinating as shoes like Nike's "PlayStation" PG2s or Adidas' "4D" Futurecrafts are, those particular models don't offer many (if any) benefits to avid runners. They're more geared toward sneakerheads than anyone else. But, that doesn't mean there aren't any tech-oriented pairs designed for people who enjoy running, be it casually or on a regular basis. That's exactly the demographic Under Armour is going after with its HOVR connected shoes, which consist of two different versions: a low-top (the Sonic) and a mid-top (the Phantom, pictured here).
Both of these come with a sensor built in that can track your cadence, distance, pace, stride and, of course, steps -- all the important metrics runners care about. Under Armour developed this Record sensor in-house, and it has been drastically improved since it debuted on the SpeedForm Gemini 2 running shoes in 2016; it's now able to track more data than before, such as stride length. The Bluetooth-powered sensors are located inside the thickest part of the midsole, which ensures that they can work even during your rainy-day runs.
As far as power goes, you don't need to worry about charging the HOVRs, since the batteries in the sensors are self-contained. According to Under Armour, the Record chip is designed to outlast the life of the running shoes themselves, so longevity will depend on each individual and how much they work out. That said, the company is confident that you won't ever have to worry about running out of power.