HP’s most powerful Spectre convertible yet looks stunning and runs smooth with a jaw-dropping high definition, near-borderless display and long battery life that takes you from day to night. Add in the security features you need for peace of mind and this stylish powerhouse has everything you need to power through. the Spectre x360 15 is still a big slab when used as a tablet. Like most convertible 2-in-1s, its 360-degree functionality is best served on a solid surface, especially in its presentation mode.