prose p { text-align: justify; } A4Tech OP-720D Wired Mouse SpecificationModel：A4Tech OP-720DType: WiredErgonomic Design: SymmetricSensor: OpticalResolution: 1000 DPIButtons No.: 4Port: USBCable Length: 150 cmSystem Requirements: Windows XP / Vista / 7 / 8 / 8.1 / 10A4Tech OP-720D Wired Mouse in BangladeshA4Tech OP-730D Mouse with hyper-fast scrolling for increased productivity. A nearly frictionless scroll wheel lets you fly through long documents and Web pages with a single flick. Experience smoother cursor control on virtually any surface. A4Tech OP-730D Contoured design gives you more support and control.A4Tech OP-730D Extreme quality offer over 5 million clicks guaranteed. Guaranteed smooth and accurate tracking anywhere, even on furry textiles. A4Tech OP-730D away your mouse adjust one click on the “2X Button” straightly opens files and programs easily. Without any driver, Save time & improve efficiency. Dust-resistant design prolongs wheel life-span. 8 gestures to perform selectable hotkey commands. A4Tech OP-730D Smart horizontal & vertical scrolling.Click the 5m button in LifetimeExtreme quality offers are guaranteed with over 5 million clicks.1000 dpiSmooth and accurate tracking is guaranteed somewhere, even in red textiles. Drop your mouse pad!Double click to say goodbyeClick the “2x button” to easily open files and programs. Save time and improve efficiency without drivers.Dust resistant wheelDust-resistant design long wheel life.4 wheelsSmart horizontal and vertical scrolling.