DefenseGuard Antimicrobial Protection is infused into the product for a cleaner surface, it eliminates and prevents the growth of bacteria on product surfaces and touchpoints Matt finish with chrome accents and soft-touch coating Titled ergo-design for right-hand use, it mimics natural wrist alignment Blue Trace sensor with customisable 1600 DPI, works on virtually all surfaces including glass 7 Buttons: Left/Right click, Back/Forward, App-Switch, Wheel mode-shift, Middle Click Scroll Wheel: Yes, with auto-shift Thumbwheel: Yes Gesture button: Yes Low Battery Indicator For Right Hand Use Plug and Play set-up 2 x AA Energizer batteries included 667hrs based on 2800mA battery capacity