- Easily install the TR18650 battery to power your device; ensure correct orientation of positive and negative terminals. (Battery sold separately) - Expand your music options by inserting an SD card with song files into the designated slot or connect a USB flash drive with your favorite tracks through the USB interface. - Connect audio speakers effortlessly using the included wiring; remember that red indicates positive and black indicates negative for proper setup. - Instructions for use are straightforward, making it user-friendly for all levels of experience. Key Benefits: - Versatile audio input options (SD card and USB) allow for a customized listening experience. - Easy speaker connection ensures quick setup and immediate enjoyment of your music. - The TR18650 battery provides reliable power for uninterrupted performance. Applications: - Ideal for home audio systems where you want to play music from various sources. - Perfect for DIY audio projects, giving you flexibility in how you want to design your sound experience. - Great for events or gatherings, where you can easily switch between multiple audio files stored on your SD card or USB drive. This product combines functionality and convenience, making it an essential component for any audio setup.