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 Soft and Comfortable Compact Storage for On-the-Go Use Control on Your Finger Space-Saving & Travel-Friendly Ideal for Learning, Business, Conference