• Laser-etched, backlit keys• Full-size layout• PerfectStroke™ key system• Logitech® Incurve keys™• Logitech® Unifying receiver• Fast, easy recharging thru universal micro-USB• Logitech Advanced 2.4 GHz wireless• Sleek, streamlined design• Adjustable backlighting• Hand proximity detection - Sensors detect your hands as they approach the keyboard to turn the backlight on and off.