Some of the most notable new small Bluetooth speakers have supplemented their portability with ruggedized features, and Pyle Audio has joined the pack with its Sound Flow Waterproof Bluetooth Speaker ($70, a.k.a PWPBT60). Roughly Jawbone Jambox-sized, the speaker has a metal grill set back behind raised rubber, offering a "marine grade" waterproof and shock resistant accessory with two speakers and an unusually powerful 30-Watt amplifier. A detachable…
