* With fully compatible line control version and a switch key, it is suitable for 99% national standard and American standard 3.5mm mobile phone.* Unique half ear design for proper distance from the eardrum, avoid hearing loss.* Specially designed tuning holes make the voice more natural and real, give you better music enjoyment.* High-quality TPE material is durable, smooth cable help you avoid tangle problem, prolong the service life.* High-sensitivity mic brings you clear talking experience, you can enjoy high quality talk and phone call.