Features: Brand new and high quality [Multifunctional Module Option]This set includes a highly performances module supporting rapid pairing and stable connection, compatibles multiple mobile phones and other devices. [Premium auditory Amplifier]Equipped with a low-power auditory amplifier ensuring clear sound quality and ample sound. [Flexible loudspeaker Unit Selection]Offers multiple loudspeaker unit option, allowing users to select suitable size and power according to requirements for optimal auditory performances. [User-Friendly Design]This set features a straightforward design, ideal for electronics enthusiasts and beginners alike, requiring only simple soldering and assembly. [Friendly Power Solution]Supports Rechargeable Battery power for convenient charging and portability, complete with a charging module to ensuring extended usage. Specifications: Component：Acrylic, ABS. Dimensions: assembled size 6x6x6cm/2.36x2.36x2.36in Weight: 160g. Type:Wireless/ Corded Optional Type： Unassembled Package Includes: 1PC loudspeaker Building Set note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution