Yesterday, we featured a great deal on a stationary Bluetooth dock. Say you need something a bit more portable, though. What should you buy then? Heavens, can anyone save you from this crisis of audio need?! Well, yeah. And calm down. Here's a portable Bluetooth speaker from Best Buy. Today only, this Rocketfish SPX15 is available for $40, which is $60 off its normal MSRP and about $30 off its already-lower price on Amazon. Not bad.2012-08-09_14h35_58According to reviews on Amazon and CNET, it's a decent little box. The built-in battery is rechargeable which is always a nice touch, and reports are that the sound quality is good. Not great, but good. Of course, most reviewers were looking at this from the standpoint of a $70-80 price tag. At $40, it's a bit harder to pass up. So, if you have a need for a portable, rechargeable Bluetooth speaker, hurry up and grab this deal before the end of the day.Source: Best Buy