Specifications & features compact, lightweight, and easy to carry, the srs-xb23 combines punchy bass sound with a tough, durable, go-anywhere design. extra basstm sound compact, lightweight, and highly portable x-balanced speaker unit for clear, powerful sound waterproof, dustproof2 (ip67 rated) and shockproof4 up to 12 hours of battery life5 (extra basstm: up to 10 hours6) speaker type full range battery life approx. 12h input and output terminals usb-type-c tm frequency transmission range 20 hz - 20,000 hz (44.1 khz sampling)