Microsoft Surface Pen V4 - Stylus - 2 Buttons - Wireless - Bluetooth 4.0 - Platinum. Write, draw, or mark-up documents - digitally. Take notes to quickly capture your thoughts, and instantly convert to text for sharing and searching. Simply click once to open OneNote, or click and hold to access your personal digital assistant, Cortana. It feels as natural as pen on paper with precision ink on one end and an eraser on the other. Limited Warranty - 1 Year. PLEASE NOTE: Compatible with Surface Laptop (Gens 5-6)/Go 4 Devices - NOT Compatible with Laptop Go 3/Pro (Gens 9-10) & Copilot+ PC/Laptop Copilot+ PC Devices.