Get the Bose SoundLink Flex portable speaker for $40 less at Amazon

GET $40 OFF: As of July 31, you can snag a Bose SoundLink Flex speaker for $109, down from $149, at Amazon. That's a $40 discount.

Bluetooth speakers are the unsung heroes of summer adventures, from backyard barbecues to beach days. These nifty little gadgets make it easy to create your own soundtrack wherever you go, but they can get expensive — unless you find a killer deal.

As of July 31, you can get a Bose SoundLink Flex Bluetooth speaker for just $109 at Amazon. That’s $40 off the listing price and the lowest price we’ve seen this speaker go for at Amazon, per price trackers like CamelCamelCamel. (Select colors of this speaker were briefly priced at $99.99 during Prime Day and Target Circle Week, but that deal didn't last long.)

The SoundLink Flex is one of Bose’s best portable speakers, and a way better option when compared to the Bose SounLink Max, at least according to Reddit. We've also tested out this speaker, and it offers big sound and easy connectivity. Not only is it fully waterproof, but it can even float. It's also dust-proof and resistant to corrosion and UV light, making it the ideal summer companion. It also comes in a variety of colors, but the black model is the cheapest at $109. You can get other colors, like white smoke or stone blue, for $119.

This speaker is small enough to throw in your duffle but powerful enough to fill a room or outdoor space with crisp, immersive audio. You can also connect it to your phone to make and answer calls hands-free. With up to 12 hours of playtime per charge, you’ll be able to keep the tunes going all day long – or until your neighbors complain, whichever comes first.