The A4TECH Fstyler FB2535C Bluetooth & 2.4G Wireless Keyboard Mouse Combo offers a variety of convenient features for an efficient and comfortable user experience. Connectivity options include a plug-and-play 2.4G Nano USB receiver or via Bluetooth, allowing for a strong and reliable connection. Up to 4 devices (3 Bluetooth and 1 2.4G) can be connected at the same time for easy switching. The keyboard features multimedia hotkeys for one-touch access to 12 functions, and its compact size saves space on your desktop. The FN mode can be locked and unlocked with a simple keystroke, and there is even an integrated smartphone cradle for hands-free device use. The keycaps are designed for comfortable typing, and the keyboard can switch between 3 connected devices with just one click. The mouse has 2 thumb side buttons that can be customized with software, and a Type-C rechargeable design with a long-lasting lithium battery. The DPI can be adjusted to 4 levels (1200/1600/2000/2400) and there are 16 selectable hotkey commands. An on/off power switch makes the mouse easy to take on the go.