The Go+Play is a portable Bluetooth speaker with a built-in rechargeable battery that is claimed to provide up to eight hours of music playback. Talking of juice, the speaker also has a USB port for charging your phone or tablet.
The speaker fires sound out of four drivers - but you'll have to battle for control of the airwaves, as it can connect to up to three Bluetooth devices at once. The Go+Play can also connect to another Harman Kardon Wireless Dual Sound enabled speaker for double the fun.
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The Go+Play works as a speakerphone thanks to a built-in microphone, which comes complete with noise-cancelling technology.
The speaker has a fabric finish and a stainless-steel handle.
The new Harman Kardon Go+Play wireless Bluetooth speaker is available now in black or white for £250.