CONVENIENT CONNECTIVITY – Enjoy a reliable connection with a 2.4GHz wireless* dongle. Store the dongle inside the mouse when you're on the go. CLICK QUIETLY – This mouse has up to 90% noise reduction on the left and right buttons. So, you get that same click feel without the sound. It’s perfect to use in any space. DESIGNED FOR COMFORT – Be at your most productive using an ergonomically designed mouse that provides all-day comfort. LONG BATTERY LIFE – Ready when you are, with a battery life that lasts up to 18 months.** STAINABLE PAPER PACKAGING – Helping put our planet first with eco-friendly packaging made of recycled paper. NO MOUSE PAD NEEDED – Ditch the mouse pad, with a mouse that tracks on most surfaces using HP Blue Optical Technology.