This is a Logitech wireless mouse, L size, that can use both Bluetooth and a USB receiver (2.4GHz). This is a new, unused parallel import. ※Please Read※ ★No Japanese instruction manual, no receiver extension cable, and the box may be damaged; this is a foreign specification. (AA batteries are included) ★Please note that customization via the Logitech dedicated app is not supported. ★We have lowered the price to the lowest possible level, so we cannot offer a discount. Thank you for your understanding. (Reference price: Approximately 5000 yen on online shops) ★Since this is an unopened item, please check the operation upon arrival. Sensor Technology: Logitech Advanced Optical Tracking Nominal Value: 400 DPI Maximum Value: Up to 4000 Number of Buttons: 5 (Left/Right click, Back/Forward, scroll wheel with middle click) Battery Type: 1 x AA battery (included) Battery Life (when using USB receiver): Up to 24 months Battery Life (when using Bluetooth®): Up to 20 months Bluetooth Low Energy technology Wireless Operating Range: 10m wireless operating range Power Source...Battery powered Connection Type...Wireless (Bluetooth)