2 month later I was buy a zebronics smartphne.his voice quality I good for 2 months but after two month .the voice quality of that speaker is very bad.i feel very irritated from this speaker.and his colour also damaged.i have very bad experience of using zebronics speakers.loudspeakers can get beter voice quality then zebronics speakers.according to me .i suggested please keep away from zebronics speakers.i will never use zebronics speaker after this experience.we can not say that it is a speaker it is a only toy box for childs.it is a bad quality speaker.if you want to buying a speaker please do not buy zebronics speakers.i never suggest any person to use zebronics smartphones.