ProElectronics Distributing via Rakuten offers the Ultimate Ears Megablast Portable Wireless Bluetooth Speaker in Black or Blue for $199.95. Coupon code "PRO30" cuts that to $169.96. With free shipping, that's the lowest price we could find by $9, although we saw it for $45 less the week of Black Friday. (Most stores charge around $200.) It's IP67 waterproof and features voice control via Amazon Alexa and up to 16 hours of playback per charge.