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 controls: mute/unmute microphone, chat, screen sharing, video on/off. Battery life of up to 20 days after a 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 of range without worrying about complicated cables. Perfect for tech enthusiasts who value top-quality products. USB receiver for wireless convenience. Enjoy ample freedom of movement without the hassle of tangled cables: USB wireless input devices establish a wireless connection to the receiver, which you plug into an available USB port. Wireless convenience: Bluetooth connection. Enjoy ample freedom of movement without the hassle of tangled cables: this input device establishes a wireless direct 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.