M28 2.5 inch Dual Mic Portable Wireless Lavalier Microphone Teaching Voice Amplifier(Purple)

1. Wireless Magnetic Lavalier Microphone: Features a sleek integrated magnetic design for quick attachment and lightweight wear, offering true hands-free operation without extra strain. 2. 66mm Rare-Earth Magnetic Speaker: Equipped with large 66mm driver that produces loud, crisp, and clear audio while resisting interference, helping protect your voice effortlessly. 3. DSP Anti-Feedback Technology: Smart DSP chip effectively filters out background noise and harsh howling/screeching, delivering purely restored vocal clarity. 4. High-Performance Battery: Powered by a long-lasting lithium battery, providing extended playtime and reliable power for all-day teaching or tour guiding. 5. Ultra-Compact & Portable Design: Exceptionally mini and lightweight—fits right in the palm of your hand for effortless daily carry and storage. Specifications: 1. Microphone: Condenser microphone 2. Input Voltage: 5V 3. Microphone Battery Capacity: 75mAh 4. Amplifier Battery Capacity: 2000mAh 5. Usage Time: Approximately 4 hours 6. Signal-to-Noise Ratio: 70dBM with adaptive noise reduction 7. Transmission Latency: 25ms 8. Sensitivity: -38dB±3dB 9. Frequency Response: 20-20kHz 10. Transmission Distance: 15 meters (unobstructed) 11. Speaker Power: 5W