As one of its daily deals, Sunvalley Brands via Amazon offers the Vava Voom 20 Bluetooth 4.0 Speaker in Black for $38.99 with free shipping. That's $3 less than last month's mention and is the lowest price we could find by $6. It features an IPX5 splash proof rating, eight hours of music playback, and dual passive subwoofers. Deal ends October 13.