The sensor belt is comfortable to wear and an ideal addition to the mobile timing gates as it allows several athletes to be tracked and measured at the same time. Using the Smart Run app, the data can be viewed in real time or later. Recharging the sensor to 100% takes approx. 3 hrs and to 80% approx. 2 hrs (via a standard 5-volt USB adapter). Battery life: 8–10 hrs. Made of plastic. LxWxH: 30x25x8 cm. 500 g.