Pool days, beach trips, and weekend getaways are a lot better with a speaker that can handle water, sand, and being tossed in a bag. The Ultimate Ears WONDERBOOM 4 fits that job well, and it is now on sale at Amazon for $64.99. That price is down from the $79.99 recommended retail price, representing a 19% discount. It’s also the first time this speaker has gone on sale on Amazon.See the deal at Amazon