Vocalism Principle: Dynamic Control Button: Yes Active Noise-Cancellation: Yes Communication: Wireless+Wired Volume Control: Yes Sensitivity: 85dB Wireless Type: bluetooth Is wireless: Yes Max Output: 90mW Line Length: 1m Support APP: Yes Number Of Drivers: 2 Plug Type: Line Type Impedance Range: up to 32 Ω Connectors: 3.5mm Bluetooth Version: 5.0 Support Memory Card: No Driver Diameter: 40mm Waterproof: Yes Frequency Response Range: 20 - 20000Hz Total Harmonic Distortion: 0.1% With Microphone: Yes Charging Method: CABLE
