Latest Enhanced Voice Amplifier features advanced noise reduction technology, anti-interference and anti-howling capabilities, delivering clear, distortion-free sound. Enhances voice projection without requiring loud speaking. Rechargeable Voice Amplifier: Provides up to 16 hours of continuous voice amplification or 14 hours of music playback. Fully charges in just 2.5 hours. Ideal for teachers, trainers, singers, coaches, tour guides, retail staff, presenters, and outdoor speakers. Adjustable Headset Microphone: Flexible gooseneck design allows precise positioning near the mouth. Ergonomic construction ensures a secure, comfortable fit. Compact and Portable Design: Measures 4.3 x 3 x 1.1 inches (similar to a smartphone) and weighs only 0.38 lbs. Includes a back clip for waistband or pocket attachment, plus a 59-inch (1.5 m) strap for shoulder or waist wear. Worry-Free After-Sales Service: Designed by a professional audio manufacturer with over 30 years of experience. Each unit undergoes rigorous quality testing to ensure reliability and performance. Specifications: Dimensions: 120 x 90 x 35 mm Model: T92 Wireless Version: 4G Frequency Response Range: 20 Hz – 20 kHz Total Harmonic Distortion: <1% Output Power: 15 W