What really sets the youthful, rough-and-tumble Boom Urchin apart from the rest of its brethren in the crowded Bluetooth speaker market is its flexibility.

Like other ruggedized BT speakers, the Urchin can withstand splashes and moderate abuse — but Boom has also equipped the Urchin with a smart array of effective, fun, useful little accessories that allow the Urchin to easily tag along on adventures that might be awkward for other speakers.

You can’t get Altec Lansing’s new The Jacket iMW455 Bluetooth speaker/speakerphone from anyone other than Verizon, which explains the red and black skins the Jacket comes with.

Don’t like red or black? No problem — because, like a moulting lobster, The Jacket’s special trick is its ability to swap skins. The speaker comes with the two free skins, with more colors available for a price — though we’re not yet sure which colors or how much.

The Jabra Freeway ($100) is Jabra’s flagship bluetooth car speakerphone. The Freeway has loads of top-rung features like hands-free voice commands, caller announcements and FM music-streaming, wrapped around three loud, powerful speakers accompanied by noise-cancelling dual microphones — making it a very attractive option for drivers who want to add a hands-free speakerphone to their cars.

The Mini Boombox ($100) is Logitech’s entry into the hotly contested Bluetooth micro-speaker contest. Like its contemporaries (the Jawbone Jambox and Monster iClarityHD are two prime examples), the Boombox supplies big sound in a tiny, wireless, battery-powered package — only in this case with Logitech’s signature sleek, stylish approach and a futuristic control panel. Let’s take a look at how it stacks up.