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Brand Name: Cohai Vocalism Principle: Dynamic Control Button: Yes Active Noise-Cancellation: Yes Communication: Wireless Volume Control: Yes Style: Earbuds Sensitivity: 102±3dBdB Wireless Type: Bluetooth Is wireless: Yes Max Output: 0mW Line Length: 0.6mm Support APP: Yes Function: Common Headphone Function: For Mobile Phone Function: Sport Number Of Drivers: 2 Plug Type: Line Type Package List: User Manual Package List: Charging Cable Impedance Range: up to 32 Ω Connectors: None Model Number: Wireless buletooth earphone Earcups Type: Sealed Headphone Pads Material: Other Bluetooth Version: 4.2 Codecs: AAC Support Memory Card: No Driver Diameter: 20mm Resistance: 32ΩΩ Waterproof: Yes Frequency Response Range: 20 - 22000Hz Total Harmonic Distortion: 0% With Microphone: Yes Features: With Microphone Charging Method: CABLE Magnet Type: Other Feature 1: Strong Bass Bluetooth earphone for iphone 7 8 6 Feature 2: Big power Bluetooth Earphone for Redmi note 8 7 Feature 3: Sports stereo Bluetooth earphones for Honor Feature 4: Fast Charging Could Use 2-3 Hours Feature 5: Sports bluetooth earphone with mic Feature 6: IPX4 Waterproof Wireless Earphone for Iphone X XS XR Max Feature 7: In-ear Bluetooth Earphone for Running Feature 8: HI-FI Sound Earphone for Xiaomi 9 8 7 Feature 9: Bluetooth V4.2 Earphone for Samsung Galaxly