Matias Secure Pro Keyboard Connects wirelessly to your computer via an AES encrypted USB nano receiver  the strongest level of encryption available in a keyboard Delivers a feel that's unmatched for comfort - without sacrificing the tactile feedback Laser etched keys - burned with a laser so they'll never wear off Long 1,600 mAh battery life - big enough to last 6 months to a year on a single charge under normal use High polling rate of 200 Hz eliminates lag