Music Cup Amazon Store has the Music Cup Ultra-Portable Wireless NFC Bluetooth Speaker (White or Red) for $38.99 with free shipping. Features Bluetooth Wireless connection, and Touch-n-Play Near Field Communication support for compatible devices and provides 6 hour continuous streaming music playback on a single charge. Green is also available for a buck more.
Free shipping for all orders, and free Two-day shipping for Amazon Prime members.
Now get $10 OFF for purchasing two or more unit as described on the website.