HI THIS HEADPHONE IS GOOD AND IT HAVE A GOOD BASS FOR LISTING SONS AND THEY HAVE 4HOUR CONTINUED SERVIEC AND ITS CHARGING TIME IS SO FAST FULL CHARGE TIME IS LESS THEN 1 HOUR I REALLY SUGGEST TO EVERY ONE WHO USE HEAD PHONE AND ITS FAST PAIR WITH YOUR SMART PHONE ITS REALLY GOOD PRODUCT FROM THIS PRICE SEGMENT AND