This is the Logitech Bluetooth mouse "M240 SILENT". I'm selling it because I accidentally bought a Bluetooth version when I was trying to buy a wireless mouse. It's a brand new, unused item that has only been opened (the battery compartment cover has been opened). Purchased at a physical store of K's Denki. 【Specs】 ・90% silent, comfortable fit, and quiet click sound, so it won't bother those around you. ・18-month battery life, very eco-friendly. ・Connects without a USB receiver, making it ideal for laptops with few USB ports. 【Body Size】 ・Height: 99mm ・Width: 60mm ・Depth: 39mm ・Weight (including battery): 73.8 g 【Technical Specifications】 ・SilentTouch Technology Reduces left/right click and middle click sounds by 90%. The dBA level of a single left click was measured at a distance of 1m by an independent research institution. Compared to Logitech M185. 【Sensor Technology】 ・Smooth optical tracking ・Nominal value: 1000 DPI ・DPI range: 400-4000, 100 DPI steps 【Buttons】 ・Number of buttons: 3 (left/right click, middle click) 【Scrolling】 ・Line-by-line scrolling ・Scroll wheel: Yes (2D, mechanical) 【Battery Life】 ・18 months (Mouse battery life may vary depending on usage.) ・Type of battery used: AA alkaline battery x1 (included) 【Connectivity】 ・Connection type: Bluetooth Low Energy technology ・Wireless range: 10 meters (Wireless range may vary depending on the environment and computer conditions.) ・Connection / Power: Yes. On/Off switch Shipped via Rakuraku Mercari delivery. ※Please note that returns are not accepted to prevent swapping. ※As of June 2024, "exclusive listings (reserved items)" are not available. PC accessories Connection method...Bluetooth