You can charge the headset by connecting the supplied USB power & data cable into a computer USB port or USB wall charger. You can use any standard micro-USB cable to charge the headset. The LED turns red while the headset is charging and turns blue when it is fully charged. It takes about 2.5 hours to be completely charged.
Please make sure to take off your headset-installed on the helmet while charging. The headset automatically turns off during charging.