Boasting an IPX6 waterproof rating, the Trakk Bullet Ultra Compact Waterproof Bluetooth Speaker resists dust and heavy rainfall. It's currently available in the Boing Boing Store.
The Trakk Bullet offers the same wireless convenience as other portable speakers, but few are built as tough as this one. Its utilitarian construction is designed to be a totally low-maintenance outdoor companion. Whether you're hiking through a downpour or relaxing on the beach, the Trakk Bullet will keep playing anywhere for up to 20 hours on a single charge. And if you ever need to take it inside, just hose it down—it can easily withstand a high-pressure water stream.
For crystal-clear audio in a durable package, pick up the Trakk Bullet Ultra Compact Waterproof Bluetooth Speaker. You can get it here for $39.99, 42% off the usual price.