Woot offers Nakamichi Punch Portable Bluetooth Speaker for $39.99 (orig. $149.99). Free shipping for Prime Members.

Product Description:
The Nakamichi Punch was created as part of our ongoing quest to compress the best possible sound in a portable form factor, so that you may bring it wherever you may be.

• 2 x 18w Woofers & 2 x 5w Tweeters
• IPX66 Water Resistance
• USB-C Charging
• Bluetooth 4.2