Features: Teacher-specific : specially for teachers to meet the demand for sound amplification in classroom teaching. Suitable for use by guides in outdoor scenario and more.<br> Horn Shouter Function: with horn shouter function, suitable for use in outdoor activity or gatherings.<br> Lightweighted: small and lightweight, easy to carry and use, suitable for mobile working environment.<br> Functional loudspeaker: can be used for teaching, guided tand outdoor shouting in a variety of scenario, flexible application.<br> Sound transmission: Provide highly sound transmission ensures clear and stable sound, not easy to be distorted.<br> Specifications: Size:about 115x86x35mm/4.53x3.38x1.38in<br> Interfaces Type: USB<br> Connection:Wireless BT4.2<br> Output Power<br> Sound channel: independent sound channel<br> Power supply: battery 2200mAh<br> Extended storage: 16GB<br> Effective distance: 50metres<br> Playback time: 10-15hours<br> Case Component: Plastic<br> Color: Black/Rose Gold<br> Package Includes: 1Set Sound Amplification with Microphone<br> note: Due to the problemsof lighting effects and shootingangles, there will be tolerances in the product, please understand.<br> Please allow 0-1cm error due to the manual measurement.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store