K3 Wireless Lavalier Microphone with Integrated Earphones and 2 in 1 Receiver For Live Streaming Vlog Interview 1. Professional-Grade Recording:Smart wireless lapel microphone delivers studio-quality audio output for live streaming and recording. 2. Plug-and-Play Functionality:No app required, offering instant use for various applications including live streaming, vlogging, interviews, and video teaching. 3. Multiple Audio Effects:Features studio, concert hall, KTV, and voice-changing effects for versatile audio production. 4. Long Battery Life:Up to 6 hours of continuous use on a full charge, ideal for extended recording sessions. 5. BT 5.0 Connectivity:Ensures stable wireless transmission within a 10-meter range for flexible positioning. Specifications: 1. Microphone Main Chip: WS300F1 2. Receiver Main Chip: WS300F1 3. Power Adapter: 5V 4. Charging Current: 310mA 5. Battery: 3.7V 200mAh (Polymer Li-ion Battery601040 with Protection Board) 6. Charging Time: Approximately 1.5 hours 7. Power Port: Type-C 8. Power Supply: 5V 1A (via PC USB port or mobile phone Type-C port) Audio and Microphone: 1. Sound Card Function: Supported 2. BT Function: Supported 3. Microphone Directivity: Omnidirectional 4. Sensitivity: -36+-2dB 5. Output Impedance: 2.2k ohms 6. Signal-to-Noise Ratio: 64dB 7. Operating Voltage: 1.0V-10V 8. Input Sound Pressure Level: 118dB 9. Supported Audio Formats: MP3, WAV, WMA, FLAC, APE, etc. 10. Supported sampling rate: 24-bit 48kHz 11. Maximum output power: 60mW 12. Transmission distance: Within 10 meters 13. BT version: 5.0 14. Operating time: Up to 6 hours on a full charge 15. Receiver dimensions: 55 x 41 x 12mm 16. Transmitter dimensions: 71 x 20 x 13mm