I bought this battery-powered wireless mouse, but it felt a bit large for my small hands, so I'm selling it because I repurchased the G304 from the same brand. I've only taken it out of the box and played FPS games for about 5 hours, so it's practically new. It works perfectly fine. It's convenient because it can be used with both USB and Bluetooth connections. You can use Bluetooth to connect to tablets that don't have USB ports, or in environments where 2.4Ghz wireless is prohibited. Included accessories: Receiver, receiver extension cable, and the included batteries. (No box included.) ~~~ Product Data: Logitech LIGHTSPEED Wireless Gaming Mouse G603 (Black) Brand: Logicool G Series Mouse Type: Optical Number of Buttons: 6 buttons Resolution: 12000.0 dpi (4-step DPI switching) Power: Battery-powered (AA battery) Connection Type: Wireless (USB/Bluetooth) Logicool Control Software: G Hub compatible