Amazon has discounted one of Ultimate Ears newer Bluetooth speakers, the WONDERBOOM. It's a somewhat small speaker from Ultimate Ears, that is already priced under $100 and now it's available for under $80.
The UE WONDERBOOM is a small, cylindrical speaker from Ultimate Ears, but it is waterproof and does put out some rather good sound. The WONDERBOOM is available in a slew of colors, including black, stone grey, lilac, cashmere pink, fireball red and a few others. There is no 3.5mm jack on this one like with UE's other speakers, but there is a micro USB port for charging. So you'll only be able to stream over Bluetooth, and the battery is said to last at least 10 hours on continuous playback. You can also pair multiple WONDERBOOM's together.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits. Remember that if you are looking to pick this up as a gift for someone this holiday season, you'll need to order it by December 18th for non-Prime shipping, and if you are a Prime member, you have until December 22nd, to get it in time for the Holidays. Amazon does also offer extended returns for anything purchased before December 31st, can be returned until January 31st, 2018.