This waterproof speaker floats, lasts 24 hours, and costs $69.99 today

A Bluetooth speaker that fills a room without emptying your wallet exists. The Anker Soundcore Boom 2 is on Woot for $69.99 through July 10th. That is $20 less than Amazon's usual discount and nearly 50% off the $129.99 list price.

The speaker runs a 50W subwoofer paired with two 15W tweeters, loud enough for a backyard party or a day at the beach. Anker says it lasts up to 24 hours on a single charge. Its IPX7 rating means it can survive full submersion and even float, thanks to a sealed design. That is a rare feature that makes it a natural fit for poolside or lakeside use, similar to how Nvidia's GR00T 1.7 cut the distance between teleoperation and real-world robot learning by focusing on practical durability over theoretical specs.

More than just bass

Beyond the raw power, the Boom 2 comes with practical extras. A built-in microphone lets it double as a speakerphone for calls. The Anker app gives you EQ adjustments and controls for the built-in lighting. PartyCast 2.0 lets you sync with other compatible Anker speakers for a multi-speaker setup, which is the kind of orchestration problem that Microsoft's bet on small models for agentic AI tries to solve at a larger scale.

The speaker also works as a power bank, sending up to 5W from its USB-A port to charge a phone or other device. That is not a lot of power, enough for a slow trickle rather than fast charging, but it is a handy emergency backup when you are far from a wall outlet.

What it does not do

There is no 3.5mm aux input, a common compromise in waterproof Bluetooth speakers where sealing the ports is critical. Playback is strictly wireless. Anyone who needs a wired connection for lower latency or older devices will need a Bluetooth adapter. The same kind of specialization trade-off is happening in AI, where smaller models are redefining AI's future by dropping general-purpose features for task-specific efficiency.

At $69.99, the Soundcore Boom 2 undercuts most comparable speakers in the 50W-and-waterproof category. JBL's Charge 5 retails for around $180 and does not float. The trade-offs, no aux, slow phone charging, are minor at this price. This is a straightforward deal. If you need a durable, loud, waterproof speaker under $100, today's Woot sale is the one to buy, just as Cognition's SWE 1.7 pushes coding agent cost-performance further by optimizing for a clear target rather than trying to do everything.