LOGITECH M240 SILENT BLUETOOTH MOUSE Reliable Bluetooth mouse with a comfortable shape and silent clicking. FEATURES Silent Touch Technology 90% noise reduced Left/Right-click, Middle click 1Left click d BA level measured by independent lab at 1m. Compared with the Logitech M185. Sensor Technology Smooth optical tracking Nominal value: DPI range DPI range: 400-4000, Steps of 100 DPI Buttons Number of Buttons: 3 (Left/Right-click, Middle-click) Scrolling Line-by-line scrolling Scroll Wheel: Yes, 2D, optical Battery life Battery life: 18 months 2Battery life may vary based on user and computing conditions. Battery Details: 1 x AA (included) Connectivity Connection Type: Bluetooth Low Energy Technology Wireless range: 10 meters 3Wireless range may vary based on user, environmental, and computing conditions. Connect / Power: Yes, the on/off switch Optional software Supported by Logi Options+ on mac OS 11 or later and Windows 10, 11, or later Sustainability Off-white plastics: 37% post-consumer recycled material 4Excludes printed wiring assembly (PWA) plastics, and packaging. Graphite plastics: 48% post-consumer recycled material 5Excludes printed wiring assembly (PWA) plastics, and packaging. Rose plastics: 37% post-consumer recycled material 6Excludes printed wiring assembly (PWA) plastics, and packaging. Certified carbon neutral SPECIFICATIONS Height: 99 mm Width: 60 mm Depth: 39 mm Weight (with batteries): 73.8 g PACKAGE CONTENTS 1 x Logitech M240 Silent Bluetooth Mouse.