Description Reviews Portable and Powerful Voice Amplifier/Speaker. Unique in shape and appearance, Light weight design. Body Size: 125 * 85 * 45mm . Body Weight: 320 g (Approx). Material: Imported ABS and UV Technology. Rechargeable and replaceable 2200 mAh lithium batteries that standby time can lasts 6~8 hours, more than 8 hours of continuous use after a full charge. Professional sound amplifying circuit, amplifying sound (Reverberation sound). Support AUX audio input, can be used as computer speaker; support TF Card music player, can directly play MP3,WAV format audio. Besides the FM stereo radio function, auto-search and save radio stations, it also can be used as a 2200 mAh power bank for emergency use. Comes with adjustable waist or neck band and a removable belt clip, headset microphone, comfortable and Perfect for Teachers, Coaches, Tour Guides, Presentations ect. Product details:Rechargeable lithium batteries that last 6 hours of continuous use before needing a charge Small & Portable Voice Amplifier/Speaker Comes with adjustable neck band and a belt clip With FM Radio,with bluetooth& Microphone line in port USB input port We TEST before shipping to avoid any hassles to our valued customers. With Bluetooth Professional Teach Microphone Power Output: 10W Charge voltage: 5V 450mA Mic Directivity: Single Direction Frequency response: 100Hz-10KHz /- 3dB Power Supply: Lithium-ion Polymer 7.4v Mic Sensitivity: -53 /- 3dB Categories: Audio, Microphones