Brand Name: Cohai Style: In-Ear Certification: NONE Vocalism Principle: Dynamic Origin: CN(Origin) Control Button: Yes Active Noise-Cancellation: Yes Communication: Wired Volume Control: Yes Sensitivity: 123dBdB Wireless Type: None Is wireless: No Max Output: 0mW Line Length: 1.2mm Support APP: Yes Function: Common Headphone Function: For Mobile Phone Function: Sport Number Of Drivers: 2 Plug Type: Line Type Package List: Replaceable Pads Set Impedance Range: up to 32 Ω Connectors: 3.5mm Model Number: Earphone Earcups Type: Sealed Headphone Pads Material: Other Bluetooth Version: Other Codecs: AAC Support Memory Card: No Driver Diameter: 20mm Resistance: 32ΩΩ Waterproof: No Frequency Response Range: 20 - 22000Hz Total Harmonic Distortion: 0% With Microphone: Yes Features: With Microphone Magnet Type: Other