HP Spectre x360 13 4K review: A beautiful display that kills the battery

REVIEW: A few months ago HP went ahead and released a new version of its very good 13.3-inch Spectre x360 convertible laptop with a 4K Ultra HD display. A screen this fancy was previously only available on the 15.6-inch Spectre x360. Lenovo’s 13.9-inch Yoga 910 and Dell’s XPS 13 2-in-1 are both available with 4K displays, […]