These two black Yamaha 2-way bass reflex weatherproof speakers offer superior sound wherever you install them, with cabinets that are drip, water, and UV resistant. Each has a powerful 4” woofer and 1” balanced dome tweeter for clear audio across a range of frequencies. RMS output: 30W; PMPO output: 80W. They measure 6” x 9.63” x 6.74”.