Introducing the DIY Retro Mini Portable Card Speaker, a unique and versatile product that will enhance your music listening experience. This compact speaker is designed to be portable and can easily fit into your bag or pocket, making it perfect for on-the-go use. With its retro design, it adds a touch of nostalgia to your music setup. The speaker has multiple functions, including playing music from a card or U disk, and connecting to your device via Bluetooth. This allows for a seamless and convenient listening experience. The USB interface makes it easy to charge the built-in lithium battery, which has a capacity of 3.7V 400MAH. The frequency response range of 60Hz-15KHz ensures clear and crisp sound quality, while the signal-to-noise ratio of ≥70db guarantees minimal distortion. Available in five different colors - white, pink, blue, black, and green - you can choose the one that best suits your style. Measuring at 70*110*50MM, this speaker is compact yet powerful. It has a receiving distance of 10 meters, allowing you to move around freely while still enjoying your music. The charging time of 2-3 hours means you can quickly get back to listening to your favorite tunes. Included in the packaging is the Bluetooth Speaker, a USB cable, and a user manual. With its unique design and multiple functions, the DIY Retro Mini Portable Card Speaker is a must-have for any music lover. Get yours today and elevate your music experience.