The Sony SRS-XB21 Portable Wireless Bluetooth Speaker combines powerful EXTRA BASS™ technology with a rugged, IP67 waterproof and dustproof design, making it perfect for any outdoor adventure. Enjoy up to 12 hours of playtime, vibrant party lights, and the ability to connect up to 100 speakers with Wireless Party Chain. Easy Bluetooth pairing and app control via the Sony Music Center app make this compact speaker ideal for music lovers on the go. Whether you're at the beach, hiking, or hosting a party, the SRS-XB21 delivers unbeatable sound and fun features.