Features: Style: Neckband Vocalism Principle: Dynamic Active Noise-Cancellation: Yes Control Button: Yes Communication: Wireless Volume Control: Yes Certification: YES Number Of Drivers: 2 Plug Type: NONE Impedance Range: up to 32 Ω Headphone Pads Material: Other Support Memory Card: No Waterproof: Yes Frequency Response Range: 20 - 20000Hz Magnet Type: Other Wireless Type: bluetooth Line Length: 0.6m Package List: User Manual Codecs: AAC Driver Diameter: 20mm Resistance: 32Ω Sensitivity: 123dB Is wireless: Yes Connectors: None Earcups Type: Semi-open Bluetooth Version: 5.0 Total Harmonic Distortion: 0% Charging Method: Wireless Max Output: 0mW Support APP: No Function: Monitor Headphone,for Video Game,Common Headphone,For Mobile Phone,Sport With Microphone: Yes Features: Active Noice Cancelling Function: Sports bluetooth earphone with microphone Function 2: IPX4 Waterproof Wireless Earphone for Iphone X XS MAX XR 8 7 6 Plus Function 3: Bluetooth V5.0 Earphone for Samsung Galaxy Function 4:: In-ear Bluetooth Earphone for Running Fitness Function 5: HI-FI Sound Earphone fro 9 8 7 Function 6: Strong Bass Bluetooth earphone for iphone 6 6s 5s 4Note: Due to manual measurement and light reasons, 1-3cm error and slight color difference is allowed, please prevail in kind.