As one of its Black Friday ad deals, Best Buy offers the Logitech Ultimate Ears Megaboom Bluetooth Speaker in Black for $99.99 with free shipping. That's $10 under our July mention and the lowest price we've seen. (It's the best deal now by $50.) Features include:

IPX7-certified waterproof

up to 20 hours of playtime per charge

up to 100-foot Bluetooth range

360° sound

We recently named Best Buy one of the best stores for Black Friday deals this year. You can read our full Best Buy Black Friday guide here.