KZ ES4 in-Ear Headphones,Ollivan Deep Bass Earbuds HiFi Noise Isolating Headset Armature with Dynamic Hybrid Driver 0.75mm 2 Pins Universal Detachable Cable for iPhone and Android?Blue with Mic?

Features: ?The professional-grade wire scheme not only provides superior sound quality signal transmission, but also has features such as resistance to pull, resistance to bending, and corrosion resistance ?High-definition condenser microphone, dual radio design, support for international standard (American standard) mobile phone HD calls ?Detachable Cable & Universal Compatibility ?New Electronic Frequency Division Technology ?1 Dynamic & 1 Balanced Armature Driver Headphone ?Noise canceling HIFI headset Specification: Model: KZ ES4 Headphone type: In-ear headphones Headphone output source: HiFi Sensitivity: 104dB/mW Cell Impedance: 25? Frequency response range: 20-40000Hz Pin Type: 0.75mm Plug diameter: 3.5mm Line length: 120 ± 5 cm Wired or wireless headset: wired headset Yes or No Microphone: Yes Voice principle: 1 dynamic driver + 1 Balanced Armature Suitable style type music: classical, rock, pop and so on Please Note: Ollivan have the Formal authorization from KZ company,all products are original Ollivan offer 12 months warranty from the date of purchase Please Feel free to contact us if you have any questions, we will reply you within 12 hours and give you a satisfied solution soon