We've made significant upgrades to the external design, including borderless screen on the sides of the display, contrast ratio that exceeds ISO standard for key labels, super-matte paint to reduce key glare, color-matched keyboard well for visual clutter reduction, in gray that complements the silver laptop. The size is reduced from previous models, instead of 19mm it's now 16mm thin. In width and depth, it's reduced over 15%, 1.7mm narrower, 6mm shorter. The external metal covers are all aluminum for light weight and recycled content. HP SmartSense uses AI to adjust cpu and fan noise.