Logitech K350 Wireless Wave Ergonomic Keyboard with Unifying Wireless Technology - Black Keyboards - Newegg.com
Logitech® MK550 Wireless Wave Keyboard + Mouse Combo, 2.4 GHz Frequency/30 ft Wireless Range, Black | Lower Huron Company
Amazon.com: Logitech MK550 Wireless Wave Keyboard and Mouse Combo - Includes Keyboard and Mouse, Long Battery Life, Ergonomic Wave Design, Black : Electronics