Music control, LED show status Sleeping key, save power Bracket make height changable Key flat comfortable, soft touch, smooth operation Work Type: Optical Ergonomic design, stylish, comfortable feel Professional optical positioning technology, more accurate positioning The KM4802 combo has an elegant, stylish design. The low noise, ultra-slim design makes for quiet and easy typing, while volume and sleep mode hotkeys increase the user friendliness of this keyboard. The design of waterproof structure lets user easy use whenever the water goes on the keyboard. The obliquity design lets user comfortably type. Brand Lenovo SKU LE599EL0VVLCKNAFAMZ-185631 Model 888015670