Logitech M330 Silent Plus Key Features Wireless Mouse 1000 dpi 3 Buttons Optical Tracking 24 Month Battery Life (varying) Overview Get all your work done without missing a beat or disturbing those around you. Silent mice have the same click feel without the click noise, with over 90% noise reduction. Durable, high performance feet quietly glide over the desktop, while a smooth scroll wheel completes the silent experience. Silent mice eliminate excess noise while protecting the health and productivity of everyone. Make this your last annoying click, your family and friends will thank you! Specifications Design Right-handed Sensor Optical Tracking Resolution 1000 dpi Number of Buttons 3 Connectivity 2.4GHz Wireless Dongle Wired/Wireless Wireless Rechargable No, removable battery Colour Black Dimensions 105.4 x 67.9 x 38.4 mm Weight 91g