This is a modern-feeling mouse with speaker function. 8Ω / 2W speaker brings you good acoustic fidelity. 3 D technology creates the stereo oily appearance. Press lattice anti-skid roller and you can scroll by cursor. Ergonomic shape reduces fatigue caused by long time playing. This mouse is ideal for professional game player or home office use.  Features:  Speaker function: Speaker and mouse 2 in 1 with 8Ω / 2W good acoustic fidelity.  3 D oil appearance， stereo and cool-looking， never fade.  Pressing lattice anti-skid roller and scrolling by cursor.  Ergonomic design surface， comfortable hand feeling， reduces fatigue.  1200 DPI optical engine， precise positioning.  Specifications:  Cables: USB and 2.8mm audio cable  Key quantity: 3  Resolution: 1200 DPI  Key life: 5 million times  Operating voltage / current: 5V， 15-30mm  Support system: For Windows XP / Vista / Win 7  Cable length: 230.0cm / 90.6in  Color: Wine red  Material: ABS  Item size: 11.4 * 5.6 * 3.7cm / 4.5 * 2.2 * 1.5 (L * W * H)  Item weight: 95.0g / 3.4oz  Package size: 15.0 * 11.5 * 5.0cm / 5.9 * 4.5 * 2.0 (L * W * H)  Package weight: 130.0g / 4.6oz  Package list:  1 * Mouse