Dear Customer, for reference: If there are quality problems, we promise 100% refund! We send all order tracking What you see is what you have received Brand: langsdom Style: Ear hook Line length: 1.2 more→m Resistance: 32 Communication: Wired Support APP: no Waterproof: No Wireless Type: None Plug Type: Linear Sensitivity: 107 dB Connector: AUX Features: noise reduction, microphone, mobile phone, portable, iPod, HiFi headset, sports, voice control, Principle: Dynamic Frequency response range: 20-20000Hz The flat ear design is suitable for your ear and enjoy a comfortable experience. Headset line using braided wire, to adapt to the manual weaving technology, through the type of weaving equipment