Features: Experience clear sound with portable voice Amplifiers, featuring advanced noise reduction technology and Double power modes for uninterrupted use in any setting. This ABS device offer a rechargeable battery and dry cell compatibility, ensuring long performances with up to 6 8 hours of continuous operations on a single charge. for teachers, Tours guides, fitness instructors, and public speakers who require clear communication without straining their voice during extended speaking. Perfect for classrooms, outdoor tours, fitness centers, and conference room, providing powerful Sound output even in noisy surroundings. Equipped with adjustable head worn Microphones, this user friendly Amplifiers allows operations and intuitives controls, making it easy to adapt to various applications. Specifications: Materials: ABS Color: Black, White, Roses Gold(optional) Size:85x85x34mm/3.35x3.35x1.34inch Package Includes: 1Set Headworn Microphones Loudspeaker note: Please allow 0-1cm error due to manual measurement. please makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you.