Designed for better posture, less strain and more support. Contains a minimum of 61% post-consumer recycled material. You'll type more naturally with a curved, split keyframe. The sloping form reduces muscle strain on your wrists and forearms. Bluetooth® 5.0, USB. Microphone mute, talk-to-text, and other customizable F-keys. Uses 2 "AAA" batteries (included). 2-year warranty. English. Graphite.