The Sony SRS-XE200 X-Series Bluetooth speaker is 48% off ahead of Prime Big Deal Days. It comes with a corded strap, making it easy to tote around on your adventures. With a IP67 rating, it's water- and dust-proof, giving it a rugged build. Not to mention the 16 hours of battery life that keep the party going all day.

The Era 100 is Sonos' latest entry-level speaker, and it was redesigned from the inside out to be a big departure from its predecessor.

When it comes to speakers, you often get what you pay for — which makes Amazon’s second Prime Day of the year a very good time to pick up highly rated (and otherwise pricey) Bluetooth or smart speakers while they’re cheaper than usual.