・【AI Noise Reduction】Advanced AI and DSP noise reduction technology effectively filters out both steady and unsteady environmental noise,preserving pure human voice for crystal-clear communication. ・【High-Fidelity Audio】With a 48KHz/16bit sampling rate,this microphone captures rich audio details,delivering superior sound quality for professional-grade recordings. ・【Enhanced Signal-to-Noise Ratio】Boasting a 98dB signal-to-noise ratio,the YESIDO KR21 ensures cleaner audio with minimal background noise,resulting in exceptional sound performance. ・【Karaoke Mode】The microphone supports a Karaoke mode,perfect for entertainment and casual singing sessions. ・【Fast Charging】Quick 1.5-hour charging time ensures minimal downtime between uses. ・【Low Latency】With just 25ms transmission delay,experience real-time audio feedback for seamless communication and recording. Specifications: ・Material: ABS ・Chip: AI7131A+AI7187C ・Frequency Range: 2.4GHz ・Sampling Rate: 48KHz 16bit ・Transmission Delay: 25ms ・Charging Voltage: DC 4.8V-5.4V ・Charging Current: TYPE-C 5V/1A (MAX) ・Battery Capacity: Microphone: 90mAh,Charging Case: 750mAh (Lithium Polymer) ・Microphone Usage Time: Approx. 7 hours ・Charging Time: Approx. 1.5 hours ・Microphone Sensitivity: -38 dBFS (Silicon Microphone) ・Working Current: 58-65mA ・Charging Interface: TYPE-C DC5V/1.5A (MAX) Package included: ・2 x Transmitter ・1 x Receiver ・1 x Charging Cable ・1 x English Instruction Manual ・1 x Charging Case