Available in 4 Colors:Orange,White,Green,Black The BT5.1 + BT5.1 and USB 2.4GHz connections let you connect up to 3 compatible peripherals.You can switch by clicking the switch button on the bottom of the mouse. Bluetooth mode works with Windows, Android, MAC OS, iPad iOS 13 and above system, 2.4GHz mode works for devices with USB port or Type C port (Type C adapter included). This wireless mouse is built-in rechargeable battery, simply charge the mouse with Type C charging cable (included), no need to change batteries.