This is a matching set of Bose Model 101 Music Monitor indoor/outdoor loud speakers that have been fully tested. They are compatible with universal brands and have a driver size of 2.5 inches. These rectangular loud speakers have a sleek black color and provide 40W of RMS power with 4 Ohm impedance. The audio inputs are banana jack and connectivity is wired. The speakers come with no additional features and are perfect for home audio use. These speakers are perfect for anyone looking for high-quality loud speakers without breaking the bank. The Bose Model 101 Music Monitor speakers have a great sound quality and are perfect for indoor or outdoor use. They can be used with any universal brand and have a sleek black design that will fit in with any home audio system.