Bluetooth Headphones Wired & Wireless Headset Active Noise Cancelling

Style: Headphone Certification: CE Vocalism Principle: DynamicControl Button: Yes Active Noise-Cancellation: Yes Communication: Wireless Volume Control: Yes Sensitivity: 88dB Wireless Type: bluetooth Is wireless: Yes Line Length: 1m Support APP: No Function: for Video Game Function: Common Headphone Function: For Mobile Phone Function: HiFi Headphone Number Of Drivers: 2 Plug Type: None Package List: User Manual Package List: Charger Package List: Charging Cable Package List: 3.5mm Jack Adapter Impedance Range: up to 32 Ω Connectors: None Model Number:  bluetooth headphone Earcups Type: Sealed Headphone Pads Material: Memory Foam Bluetooth Version: 5.0 Support Memory Card: No Driver Diameter: 40mm Resistance: 32Ω Waterproof: No Frequency Response Range: 2401 - 2480Hz Total Harmonic Distortion: 0% With Microphone: Yes Features: With Microphone Features: Detachable Cable Features: Active Noice Cancelling Charging Method: CABLE Magnet Type: Neodymium active noise cancelling: yes ,about -20dB battery: 300mah charge time: about 2h work time: about 8-10h bluetooth version: V5.0 Features: ANC Active Noise Cancelling Headphone Features1: Noise Cancelling Headphone Features2: Wireless Bluetooth Headset Noise reduction: 15-20 DB How to open Noise reduction: Press and hold the M key until the green light is displayed