Bluetooth v5.3 + 2.4GHz + Wired Type-C to USB-A AUX 4-Pin 3.5mm Dual ENC Mic 40mm Speaker Unit 12m, Play Time 45H USB Type-C Rechargeable Ultra-Low Latency & Anti-Interfence Single-Directional Noise Canceling Metal-Reinforced Adjustable Headband Breathable Ear Cushions Stay Cool Instant Mute with a Single Tap Rotates Backward for Non-Use Control on Your Finger Ideal for Learning, Business, Conference