Features:Integrated Microphone Speaker: Built-in amplifier and omni-directional microphone integrated as one, it is capable of capturing sound in 2m radius, with 360-degree voice coverage.Easy to Setup: It has volume up/down keys, one-key-mute design and line in and linking cable port, convenient to setup and use. Monitoring jack makes headphone monitoring available.Lightweight Portable: Round and plain body makes it steady to place on the table, and pretty convenient to carry with you and start conference anytime and anywhere.Wide Application: It can greatly help smartphones, tablets, MP3 Player and PC to deliver louder sound during phone call and video conference, make the contents clearer to hear.Bunch of Accessories: The package comes with bunch of cables like 3.5mm TRRS audio output cable, USB Type-C to USB-A cable and USB Type-C to USB Type-C cable.Specifications:Brand: BOYAModel: BY-BMM400Transducer: CondenserPolar Pattern: Omni-directionalFrequency Response: 40-15,000HzOutput Power: 2.5WPower Requirements: Built-in 800mAh lithium battery or DC 5V/500mAhCharging Time: Approx. 2.5hBuilt-in Battery Life: Approx. 4.5hCoverage Range: 2m/6.6ft radiusCable Length: 1.2m/3.9ftDimension: 12 * 12 * 3.3cm / 4.7 * 4.7 * 1.3inNet Weight: 220g / 7.8ozPackage Size: 18.8 * 14.3 * 3.9cm / 7.4 * 5.63 * 1.54inPackage Weight: 250g / 8.81ozPacking List:1 * Microphone1 * 3.5mm TRRS Audio Output Cable1 * USB Type-C to USB-A Cable1 * USB Type-C to USB Type-C Cable1 * User Manual