Dell Premium Active Pen -PN579X, Bluetooth 4.2, Microsoft Pen Protocol, White LED indicator, Wacom Active ES technology, Wacom Active ES technology (AES) 2.0, Microsoft Pen Protocol (MPP) 1.51, Windows Ink Workspace, AAAA battery, replaceable nib, tweezer, tether lanyard, Designed For: Dell Inspiron 13 5379 2-in-1, 13 7378 2-in-1, 15 5579 2- in-1, 15 7579 2-in-1, 7373 2-in-1, 7386 2-in-1, 7573 2-in-1 Dell Latitude 3189, 5175 2-in-1, 5285 2-in-1, 5289 2-In-1, 5290 2-in-1, 7275, 7285 2-in-1, 7389 2-in-1, 7390 2-in-1, 7400 2-in-1 Dell Venue 10 Pro (5055), 10 Pro (5056), 8 Pro (5855), Dell XPS 12 9250, 13 9365 2-in-1, 15 9575 2-in-1