It's easy to see why the likes of Sony might look at JBL and Ultimate Ears' lineup of extremely rugged portable Bluetooth ...

The SRS-XB100 packs a two-watt driver and a passive bass radiator that work together to deliver mono audio with a frequency range of 100Hz to 15kHz—pretty impressive for such a small speaker.

Right now the Sony WF-1000XM5 are down to $198 at Amazon — that's a great $100 discount that brings the flagship earbuds down ...