The MZ M420SP PRO is a portable Bluetooth speaker that offers a range of features to enhance your audio experience. Here's a breakdown of its key features: Dynamic Sound: The MZ M420SP PRO is designed to provide dynamic and high-quality sound, ensuring an immersive listening experience for your music and other audio content. Built-in Disco Light: This speaker comes with a built-in dome-shaped disco light that adds a fun and colorful element to your music listening or party atmosphere. The abstract color patterns created by the disco light can enhance the visual experience during your gatherings. FM Radio: You can tune in to your favorite radio stations using the built-in FM radio feature, giving you the option to enjoy live broadcasts in addition to your stored music. TF Card Support: The speaker supports TF (microSD) cards, allowing you to play audio files directly from your memory card without the need for external devices like smartphones or tablets. Wireless Connectivity: With Bluetooth connectivity, you can easily connect your smartphone, tablet, or other Bluetooth-enabled devices to the speaker. This wireless feature provides convenience and flexibility for streaming music. USB Port: The speaker is equipped with a USB port, which enables you to connect external USB devices like flash drives or external hard drives to play music directly through the speaker. 1200mAh Lithium Battery: The speaker is powered by a 1200mAh lithium battery, which provides a portable power source for your music. While this capacity may not offer extremely long playback times, it should be sufficient for shorter listening sessions. 5W x 2 Speakers: This speaker incorporates dual 5-watt speakers, which should deliver a balanced and reasonably powerful audio output, suitable for casual listening and small gatherings. SNR 90dB: The Signal-to-Noise Ratio (SNR) of 90dB indicates that the speaker is designed to produce clear and low-distortion audio, enhancing the overall sound quality. In summary, the MZ M420SP PRO is a portable Bluetooth speaker that offers a variety of features, including dynamic sound, a built-in disco light, FM radio, TF card support, and multiple connectivity options. While the 1200mAh battery may limit extended use, it should work well for shorter audio sessions and small gatherings.