Before initial use of your headphones, it is important to bring the power up to full charge (allow up to 2 hours). Be sure the room temperature is between 5°C (41°F) and 40°C (104°F) and the product is at room temperature.
Charging your headset
Use the supplied USB cable to connect the headphones to a powered USB drive on your computer or a wall charger (not supplied)
When fully charged, headphones will have about 16 hours of battery life