Both the mouse and keyboard are designed to be used with multiple devices to let you quickly and easily switch between computers. M720 Triathlon mouse Seamlessly switch between 3 computers to demonstrate you're a multi-tasking master. The illuminated numbers on the top of the mouse will clearly indicated which device you're connected to. Its durable wheel allows you to quickly whizz through endless webpages, as well as stop instantly when you spot the information or image you're looking for. The buttons on this mouse are built to withstand up to 10 million clicks. The M720's over-sized shape and rubber surface means it comfortably fits in your right hand. The single AA battery should last up to 2 years, but that could vary depending on your use and computing conditions. M720 system requirements: Internet connection for software download, USB port. Bluetooth Smart Windows 10 or later, Windows 8 Mac OS X 10.10 or late Chrome OS™ Android 5.0 or later Unifying Receiver Windows 10 or later, Windows 8, Windows RT, Windows 7 Mac OS X 10.05 or later Chrome OS™ K780 keyboard Designed to work with your computer, smartphone and tablet, so you can easily switch between devices. It'll work with PC, Mac, Chrome OS, Android and iOS, allowing you to cross between a range of models. The groove at the top of the keyboard is perfect for propping up your smartphone. Holds most smartphones and tablets up to 11.3mm (0.4 inches) thick and 12-inch in landscape mode only The full-sized keyboard is fitted with concave keys to provide a silent, pleasant typing experience. Along with the letters and symbols you'll also find a numbers pad and familiar shortcuts to help you swiftly move from one key to the next. Enjoy a wireless connection of up to 10m/33ft range and 128-bit AES encryption between keyboard and connected device. The K780 has 2 pre-installed AAA batteries that should last up to 24 months. System requirements: Windows® 7, Windows 8, Windows 10 or later Android™ 5.0 or later Mac OS X 10.10 or later iOS 5 or later Chrome OS™ USB connection: available USB port required Bluetooth connection: Bluetooth Smart ready device with keyboard support required (HID profile)