I am using thia ear phone from last 1 year I fell sound in this quality of sound is very good also buit quality is best its inside ear earphone so you can use this fot long hours without hurting your ear.Provide hing quality sound and sounds more good in DOLBY surrounding sound. compare with other ear phone of this type this one is realley good just small bugs like less bass feels bad with some sound & no mike provie for call but overall exprence is awsome you can buy this at online store best in classs ear phone