The Wireless headphone uses two AAA batteries hidden within the left headphone. The weight of the headphone with the batteries is only 203 grams and it doesn’t feel heavy when it’s over your head. The headphone comes with an adjustable headband that will fit most people, but the headphone itself does not grip well as both earpieces do not cover the ear in full. This may cause the headphone to slip off easily if use them in rigorous activities such as running.



Link: HardwareZone