Found amongst some clearance electricals at Tesco Extra (Prescot), so may be store-specific. Still £29 online at Tesco Direct and £18 at Amazon so worth a look elsewhere just in case.
A splash proof rechargeable bluetooth speaker, extremely solidly built with a bass radiator and hands free phone capability. Sounds pretty good for the size (and price!).
Review here: http://uk.pcmag.com/divoom-voombox-travel/33896/review/divoom-voombox-travel