PULUZ Portable Wireless Teaching Microphone Voice Amplifier

Feature 1. DSP Anti-Howling Noise Reduction: Built-in DSP smart chip active noise cancellation prevents harsh feedback, high-frequency squeals, and background noise distortion. Ensures smooth, natural, and crisp sound reproduction for professional teaching and presentations. 2. High-Performance Battery: Powered by a high-capacity lithium battery to deliver long-lasting operational time. Ideal for all-day teaching schedules, long tours, outdoors, and continuous public speaking without frequent recharging. 3. Versatile USB-A Playback & Bluetooth: Functions as both a voice amplifier and a portable Bluetooth speaker. Features an added USB-A port that supports U-disk direct plug-and-play music/audio playback alongside wireless Bluetooth connectivity for versatile teaching materials. 4. Ultra-Compact & Handheld Portability: Ergonomically crafted with an ultra-lightweight, handheld design that easily fits into the palm of your hand. Highly portable for teachers, tour guides, fitness instructors, and coaches on the move. 5. Large Speaker: Equipped with a powerful magnet speaker driver that delivers loud, crystal-clear projection with strong anti-interference performance. Project your voice effortlessness across classrooms or large spaces while protecting your vocal cords from strain. Specification 1. Material: ABS plastic 2. Charging input: 5V/1A 3. Wireless operating frequency: 2.4GHz-2.4835GHz 4. Microphone sensitivity: -40dB (unidirectional) 5. Frequency response: 100Hz-10KHz 6. Signal-to-noise ratio: 65dB 7. Microphone operating power consumption: 18mA 8. Microphone power-off consumption: 0.2uA 9. Receiver operating power consumption: 200-400mA 10. Receiver power-off consumption: 3uA 11. Microphone battery: 120mAh 12. Receiver battery: 1800mAh 13. Speaker: 4 ohm, 5W 14. Supports wireless connection, wired external microphone, Micro SD card playback, USB flash drive playback, and Bluetooth playback 15. Weight: 175g