Bring powerful sound to any space with the Sony SRSXB33 EXTRA BASS Bluetooth Wireless Portable Speaker. EXTRA BASS performance creates clear, full sound with up to 24 hours of battery life. The IP67 waterproof, rustproof, dustproof and shockproof design is equipped for anywhere life takes you. You can take further control over your favorite music with the Sony | Music Center app.Enjoy Powerful Sound AnywhereEnjoy deep, punchy sound wherever you like with your EXTRA BASS speaker. Dual passive radiators work together with full-range speakers to enhance low-end tones, giving bass a boost.X-Balanced Speaker UnitDeveloped by Sony, the X-Balanced speaker unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience.Side Passive RadiatorsThe layout of the side passive radiators has been optimized to reproduce clear bass sound.Waterproof and RustproofWith an IP67 rating, your speaker is waterproof and rustproof– so you’ve no worries using it by the sea or the pool – and there’s no problem rinsing it either.Dustproof DesignWith an IP67 rating, you can take your speaker to the trail, the forest, the city, or wherever you like - the Sony SRS-XB33 Speaker will keep on playing, no matter how dusty the surface.Bundle Includes:Sony SRSXB33 EXTRA BASS Bluetooth Wireless Portable Speaker (Blue)Knox Gear Hardshell Case