Introducing our DiamondBoxx value line. The 40W is the first in the lineup, others coming. These are a low cost high value design using high quality Bluetooth wireless and Texas Instruments TPA3118D2 amplifier chipsets. Two 58mm high excursion full range drivers and two passive radiators on opposing sides. Use in the kitchen or bathroom or where space is a premium to wirelessly stream music from your phone, tablet, or bluetooth enabled computer. Also useful as a speakerphone and a phone charger.