The 2 Optimus Pro 77 No.40 2057 Max 70W Original Bookshelf Speakers are compact and small rectangular-shaped bookshelf speakers in black color. These wired speakers from the brand Optimus have an impedance of 8 Ohms and an RMS power of 70W, providing clear and powerful audio. Made of metal, these speakers have dimensions of 5.5" in length, 9" in height, and 4.5" in width, making them a convenient and quality audio option for any home setup.