Wireless keyboard with 15 hotkeys. US/International keyboard layout: QWERTY (US). Wireless connection via USB receiver or Bluetooth (up to 10 m range). Keys: 15 hotkeys, Windows keys, shortcuts, and numeric keypad, keyboard backlighting. Battery indicator light, height adjustable, rechargeable (USB-C to USB-C charging cable included). Touch control: mute/unmute microphone, chat, screen sharing, video on/off. Battery life of up to 20 days after full charge. The Dell KB900 keyboard in black-gray-graphite monochrome QWERTY is an innovative piece of technology for computer and electronics enthusiasts. With a battery capacity of 3000 mAh and adjustable backlighting, it offers maximum comfort and flexibility. Its QWERTY layout and Bluetooth connectivity ensure a seamless connection with Windows, Linux, Mac OS, Android, and iOS devices. Experience the freedom of up to 10 meters range without worrying about complicated cables. Perfect for tech enthusiasts who value top-quality products. USB receiver for wireless convenience. Enjoy plenty of freedom of movement without messy cables: USB wireless input devices establish a wireless connection to the receiver, which you plug into a free USB port. Wireless comfort: Bluetooth connection. Enjoy plenty of freedom of movement without messy cables: This input device establishes a direct wireless connection to your Bluetooth-enabled computer. Unlike other wireless devices, it does not require a USB receiver, allowing you to keep your USB ports free for other peripherals.