Dual Wireless with 128-bit AES Encryption Security - Enjoy the flexibility of both Bluetooth (3.0 and 5.0) and a 2.4GHz wireless USB 3.0 nano dongle with AES encryption to connect your mini keyboard Connect up to Three Devices at Once - Connect the compact keyboard to a maximum of three devices at a time (computer, tablet, or smart phone) and switch from one device to another in seconds Scissor Keys with Multimedia Hot Keys - The mini keyboard has scissor keys that deliver smooth, responsive typing. Hot keys provide shortcuts for common commands across compatible operating systems Low Battery Indicator - Low battery indicator let’s you know when your batteries are running low, so you can change them before the keyboard dies completely. Two x AAA batteries are included Compatibility - The keyboard works with Windows, Mac, iOS and Chrome operating systems - and can be connected to up to three devices at a time, ideal for taking between the home office and workplace