YANMAI Speech Teaching Mini Bluetooth Speaker Noise Reduction Wireless Handheld Microphone 1. Professional DSP Voice Enhancement: Built-in upgraded DSP anti-feedback chip with noise reduction function, featuring Beautiful Voice technology that delivers professional, soft audio quality while eliminating background noise for clear and pleasant sound. 2. Smart Anti-Howling Protection: Intelligent whistle suppression algorithm prevents feedback and protects hearing, ensuring safe operation in educational and professional environments. 3. High-Power Audio Output: Equipped with 3-inch neodymium magnetic speaker delivering 10W high-fidelity sound with impressive volume, effectively covering 100-120 square meter spaces so even back-row audiences can hear clearly. 4. Advanced Bluetooth 5.3 Connectivity: Seamless pairing across devices with 20m transmission range (barrier-free), compatible with smartphones, tablets, laptops and other Bluetooth-compatible devices for music playback and voice amplification. 5. Long-Lasting Battery Performance: 2500mAh lithium battery provides approximately 15 hours of continuous use with intelligent battery management system, Type-C fast charging interface reduces charging time to just 4 hours. 6. Unidirectional Pickup Design: High-sensitivity unidirectional microphone accurately captures front-facing vocals while effectively filtering out side environmental noise, ensuring natural and clear voice transmission. Specifications: 1. Model: K10 2. Directivity: Unidirectional 3. Speaker Specification: 3-inch internal magnet 4Ω 10W 4. Charging Time: 4 hours 5. Power Output: 10W 6. Battery Capacity: 2500mAh 7. Chip: Built-in DSP Beautiful Voice Chip 8. Reverb Mode: Echo Sound Effect Reverb 9. Bluetooth Transmission Distance: 20m (barrier-free) 10. Bluetooth Version: 5.3 11. Frequency Response: 50Hz-20kHz 12. Sensitivity: -49dB+30dB 13. Product Size: 68x68x253mm 14. Product Weight: Approximately 210g