| http://www.w3.org/ns/prov#value | - The sound comes from two tweeters, two woofers and a bass driver, and its internal rechargeable battery is rated at lasting 14 hours; if anything, our testing suggested that might be conservative.On/Off switch, USB socket and charging ports are all on the sideAs well as powering the speaker it has a full-sized downstream USB port into which you can plug your phone or other USB device to charge.
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