Built-in microphone. 7.1 Surround sound and Noise Cancelling Mic need to install yowu driver. The driver can run on Windows 7/8/8.1/10 system. call available, *no speaker. Wireless Bluetooth 5.0 aptX decoder Low latency, can also be used wired, Battery can continue for 48 hours, can continue for 20 hours with lights on. Configure Qualcomm Bluetooth 5.0 Support aptX Low Latency, able to connect the system stably, realize fast transmission within 10 meters. High-efficient encoding makes the sound retain more details. Make the sound quality more pure. Whether listening to music or playing games, always comes with higher sound quality. Connection Method: Wireless + Wired Sound Track: Virtual 7.1 Channel Built-in Microphone: Noise Reduction Microphone Sound Generating Unit: 40mm large unit / Resistance 32 Battery Capacity: 1000mAh Lithium Polymer Battery Bluetooth: Qualcomm Bluetooth 5.0 support for atpX Endurance Time: 48 Hours without Lighting; 3-20 Hours with Lighting Accessories: 1.8m USB TYPE-C charging audio cable + 5V 1A USB Port Power Adapter