sound is not that great which you get in in ear type earphones if you have ever used boat bass heads 225 super extraaa bass earphone or sony mdrex150 then you will definitely get very disappointed with this headphone it looks really good but a bit bulky go for bluedio t2 plus in this price segment that one is far better than boat rockerz 510 battery back up is decent i got this headphone in flipkart big billion days at just 1399 inr so it didnt effect me much thats why instead o