Logitech Wireless Mouse M190 - Full Size Ambidextrous Curve Design, 18-Month Battery with Power Saving Mode, Precise Cursor Control & Scrolling, Wide Scroll Wheel, Thumb Grips (Charcoal) - Full-size Mouse - Optical - Wireless - Radio Frequency - 2.40 GHz - Charcoal - USB - 1000 dpi - Scroll Wheel -