Despite its small size, this speaker delivers a powerful sound with booming bass and 360° surround sound. It's easy to hold and carry, making it perfect for on-the-go use. The metallic diaphragm and full-range speaker design ensure no distortion or hissing sound. The bass output is strong and balanced, adding a thrilling charm to your music. Connect two speakers to achieve wireless surround stereo sound, giving you a thrilling sound effect similar to a theater. With a 1800mAh battery capacity, you can enjoy your music for approximately 8 hours at medium volume. The IPX7 waterproof design makes the speaker fearless of rain, allowing you to use it in harsh environments like lakes, forests, and deserts. The latest BT 5.0 technology offers lower consumption, faster transmission, and no delay. Enjoy a stable connection and continuous calls within a 10m distance. The speaker has a built-in noise reduction microphone with strong sound pickup capability. You can make clear calls without facing the phone, making your communication more convenient.