MODERN, SLIM AND BEAUTIFUL PEBBLE SHAPE. Logitech wireless mouse M355 has stand-out simplicity with a design that is nice to hold, feels great in your hand and is easy to carry around. SILENT CLICKS AND ULTRA-QUIET SCROLLING. Enjoy the same click feel with over 90% noise reduction on the click sound. DUAL CONNECTIVITY. Connect the way you like via Bluetooth wireless technology or via the included tiny USB receiver. LONG BATTERY LIFE. The wireless mouse M355 stays powered for up to 18 months on a single AA battery*.*Battery life may vary based on user and computing conditions. HIGH-PRECISION OPTICAL TRACKING. This portable mouse tracks fast and accurately where you want to use it. Note : In case of Wireless mouse, the USB receiver will be provided inside or along with the mouse