RIVA Audio, the lifestyle audio brand of Audio Design Experts , has released its newest Bluetooth wireless mobile speaker - the RIVA S. The company touted some innovative new functions included in its product, like TrueWireless technology, which allows for a "true stereo speaker arrangement"; the proprietary Trillium technology employing ADX drivers; and Charge Out functions. The RIVA S is said to last up to 13+ hours at 73db, and 5+ hours at the single speaker's maximum 94cb output, RIVA said.