Dear Mr,Good day to you. This is Leona from SHENZHEN GROOVE INDUSTRIES CO.,LTD.Our company is a professional manufacturer of headphones, earphones, microphone, and hands free kits. We have more 18 years enough experience for OEM and 8 years for ODM orders .Now we have 12 product lines and more than 300 workers. Attached are our categories. If you need cheaper ones we can quote you with middle quality speaker or cheap quality speaker.Waiting for your reply, thank you very much.LeonaBest wishe