It can be bought here: https://www.amazon.co.uk/Bluetooth-Playtime-Enhanced-Resistant-SK-M12/dp/B01L6S73XQ/ref=sr_1_1?ie=UTF8&qid=1478521917&sr=8-1&keywords=Aukey+Portable+Wireless+Speaker+SK-M12
There's a longer review here: http://www.techhive.com/article/3094405/consumer-electronics/aukey-sk-m12-outdoor-bluetooth-speaker-review-surprisingly-sonorous.html