https://www.sony.com.sg/electronics/wireless-speakers/srs-xb33 Enjoy powerful sound anywhere Enjoy 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. Durability With its rugged design and long battery life, the SRS-XB33 won't let you down. Ready for anything The SRS-XB33 is seriously tough, giving you the freedom to party wherever and whenever you like. Long battery life Up to 24 hours of battery life means the SRS-XB33 can party even longer than you can. Even with the lighting on in EXTRA BASS™ mode, you can party for up to 14 hours. X-Balanced Speaker Unit Developed by Sony, the X-Balanced Speaker Unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience. Mica Reinforced Cellular speaker cone and dust cap The rigid and lightweight Mica Reinforced Cellular (MRC) speaker cone and dust cap contributes to the sound quality. Side passive radiators The layout of the side passive radiators has been optimised to reproduce clear bass sound. Hear it like it’s live Hit the LIVE SOUND button and hear your music in a whole new way. Bring your party to life with a unique three-dimensional sound experience – creating festival vibes wherever you go.