This headphone is able to adjust and rotate to fit for different shapes of head to wear and it can be folded into the size of a palm with the spindle design. This headphone is comfortable for use because of its soft sponges and protein leather material ear cap fits the ears. This Headphone provides 300 hours for Standby time, 25 hours for Music time, 25 hours for Talk Time, 1,5 hours of Charging time. The silica gel head pad protects the head and the human engineering design saves the pain from long-term wearing. Here used 450 mAh large-capacity battery, ensure that the song is played for 25 hours continuously, allowing you to enjoy the music for a long time