Bose is a worthy Voice Assistant competitor, but it is a 360° sound speaker, far more portable (1kg) and about $100 ($499) cheaper.
Sorry, for my money if I wanted a voice assistant, portable speaker I would buy the JBL Link 10/20 (Google) at $229/299 or Ultimate Ears (Alexa) Blast/Megablast at $195/265.
So how do we rate it?
It is big (240 x 160 x 126 mm), heavy (3kg), mono (not stereo), semi-portable speaker albeit that it has a well-designed, integrated carry handle.
So, we are going to review it as a member of the broader Sonos ecosystem that does not have to tether to a powerpoint for use all over the home.