Enter E-77BU USB Optical Mouse@139 mrp 199 http://www.amazon.in/Enter-E-77BU-USB-Optical-Mouse/dp/B00E98TEI8 Powerful optical sensor for the best operation accuracy Optical sensors that glide across almost any surface with no moving parts and no cleaning needed. Fits right and left hands Convenient scroll wheel for Scroll bar controlling on OS Switch life time: 1000,000 click Ergonomic design, comfortable hands touch Resolving power: 80
