Feature: 1. 【Enhanced Wireless Connectivity】: Upgrade to wireless playback and free yourself from tangled cords, allowing for seamless connections with your smart devices such as phones, computers, and tablets. Say goodbye to the limitations of traditional AUX audio input and effortlessly transform into a portable speaker. With 8W power output, enjoy powerful volume coverage and crystal-clear sound reproduction in various scenarios, including classrooms, outdoor events, and promotional activities. 2. 【Professional Sound Amplification】: Equipped with a premium magnet speaker unit made from rare earth materials, our voice amplifier delivers high-quality sound output while maintaining a lightweight and compact design. With a peak power of 8W, it effectively suppresses feedback and generates even distribution of clear and bright sound, making it ideal for teaching, tour guiding, training sessions, and promotions. 3. 【Superior Audio Processing Technology】: Utilizing advanced digital amplification technology, our voice amplifier ensures higher audio processing accuracy and anti-interference capability, effectively suppressing noise and feedback. Experience true sound reproduction that is both comfortable to listen to and beneficial for vocal health. With a single charge lasting up to one week, its built-in 1800mAh lithium battery provides reliable and continuous protection for your voice. 4. 【Convenience and Efficiency】: Designed to reduce burden on your shoulders and waist, this voice amplifier is lightweight and compact, making it easy to carry and work with throughout the day. The Type-C interface allows for stable and convenient connection, with faster and more efficient charging rate. Compatible with mainstream Android phones, it eliminates the need for additional cables. The user-friendly indicator light provides real-time status updates, ensuring a hassle-free experience. 5. 【Comfortable and Clear Voice Capture】: Featuring an ergonomic design, the head-worn microphone offers a comfortable and lightweight fit without causing any pressure or discomfort. The highly sensitive pickup core effectively reduces surrounding environmental noise interference, allowing for clear and natural voice capture. Perfect for teachers, instructors, and presenters who require a hands-free and uninterrupted communication experience. Specification: Amplifier Frequency Response: 150Hz-12kHz Peak Power: 8W Speaker Impedance: 4 Ω Total Harmonic Distortion: THD ≤ 1% 1KHz @ 4R, 4W Working Voltage: 3.45V-4.2V Battery Type: Lithium battery Battery Capacity: 3.7V/1800mAh Charging Method: DC 5V=800mA Charging Time: About 2.5 hours Usage Time: About 12 hours Product Color: Black Product Weight: About 137g Product Size: 9.2 * 7.3 * 2.5cm Head-mounted Microphone Pickup: Back Pole Electret Directionality: Unidirectional FrequencyResponse: 60Hz-16KHz Sensitivity: -48.5dB ± 3dB (0dB=1V/Pa, at 1KHz) Package List: 1 * Amplifier1 * Head-mounted Microphone1 * Back Buckle1 * Belt1 * Type-C Charging Cable1 * Instruction Manual