Thank you for viewing. This is a wireless mouse from the BUFFALO BSMBB300 series. It supports Bluetooth® 5.0, which has low power consumption, allowing for up to 2.8 years of use with a single AA battery. I wanted a pink mouse, but I accidentally bought a black one, so I'm selling it. I used it for only 4 days before replacing it. It's in good condition with little sign of use, I think. There are no operational problems. I will also send the battery and the instruction manual. 【Versatile Usage Environments】 It uses a BlueLED sensor, allowing it to be used on various surfaces such as glass tables, sofas, and notebooks. 【Convenient Side Buttons】 It is equipped with "back" and "forward" buttons, which are convenient for internet browsing, providing comfortable operation. 【Stylish Design】 The simple and stylish design, based on black, matches any desk environment. 【Brand】 BUFFALO 【Color】 Black 【Size】 10.5 x 7.5cm 【Power Supply】 One AA alkaline battery