Sony SRS-XE300 X-Series Wireless Portable Bluetooth Speaker (Black)Spread powerful sound anywhere you go and anywhere you are with the XE300 Wireless Speaker. With IP67 Water resistance, dustproof and shockproof design, this speaker is designed to thrive in any environment. Get Extra Power, Clarity, and Distortion Free Sound with X Balanced Technology Unlike the circular diaphragm in a conventional speaker unit, the newly developed X Balanced Speaker Unit in the XE300 features a non circular diaphragm that realizes