The Black Microsoft Bluetooth Mouse is compatible with Bluetooth and Bluetooth® Low Energy. Mouse button features: 4.0/4.1/4.2/5.0 | 2.4 GHz frequency range Black, Microsoft Windows 11/10/8.1, four buttons: left, right, wheel, and power (press for more than three seconds to pair). One AA alkaline battery (included and pre-installed), one year, and Bluetooth® 4.0 or higher are requirements for the device.