These are really highly recommended for a set of portable bluetooth speakers. The sound quality is astounding from such a small footprint. It's supplied with a soft pouch which I keep them in with a short 3.5 mm male to male jack for direct connection where longer usage times are required. When using on high volume with bluetooth connection, playing time is reduced somewhat.
This is a good product but doesn't satisfactorily set the brake blocks on all wheels. Some of the lesser quality wheels and brakes are far more trouble to set with this tool - easier and quicker to do it manually.