Bestbuy offers Sony - XG300 Portable Waterproof and Dustproof Bluetooth Speaker - Black for $149.99 (orig. $349.99) with free shipping.

Product Description:
Get super-portable sound to go. The XG300 wireless speaker plays as hard as you do, with up to 25 hours of battery life and IP67 waterproof and dustproof. Its rich full sound and booming bass are perfect for when you want quality audio that goes wherever you go. 

• Power and portability for your playlist
  With a built-in retractable handle and heavy-duty sound, the XG300 makes it easy to start the party anywhere
• Robust IP67 Waterproof and dustproof design
  From the beach to the park to the pool, the XG300 stands up to the elements with one of the highest ratings for protection from water and dust.
• Get extra power, clarity, and distortion-free sound with X-Balanced technology
  Instead of the traditional circular design, our unique diaphragm shape increases sound pressure for booming bass and distinctive, high-quality audio.
• Play all day on a single charge and get Battery Care protection
  Keep the party going with up to 25 hours of battery life on a single charge, and USB-C quick charging gives you up to 70 minutes of playback after just 10 minutes of charge time.
• Sony | Music Center app
  Optimize audio settings, select playlist, cue the next Sony, and control Party Connect.
• LED ring lighting that makes the mood
  Light up your environment. Whether it’s low-key ambient accents you want or lighting that syncs to the beat on the dancefloor, it’s all customizable through the Sony Music Center app.
• USB Type-C and Device Charging
  The XG300 comes complete with a USB-C for battery charging, and doubles as a power bank with a USB-A port for charging another device no matter where you are.
• Connect wirelessly via BLUETOOTH technology
  Stream anywhere, courtesy of BLUETOOTH connectivity. The Multipoint Connections also allows two devices that can be paired at the same time.
• A crisp microphone paired with Echo Cancelling technology
  XG300 allows for more natural conversations during online meetings by having two people talk at the same time without cutting either one off.
• Fiestable App
  Have more fun with Fiestable app by controlling fun features, like making playlists, karaoke, and motion control.
• Get things booming with Party Connect
  With the Party Connect app you can combine up to 100 compatible X-series wireless speakers with BLUETOOTH technology and sync your music so everyone dances to the same beat.