Compatible with Surface 3, Surface Go, Surface Pro 3, Surface Pro 4, Surface Pro 5, Surface Pro (2017), Surface Pro 6, Surface Pro 7, Surface Pro X, Surface Laptop 1, 2, 3, and 4, Surface Book 1, 2, and 3, Surface Studio, and devices with Windows 10 system. Writes smoothly with no lag or offset. The stylus body is made of aluminum alloy, providing durability for everyday use. The clip design offers portability, and the pen has a sleek, comfortable grip. Palm rejection technology automatically detects the pen to prevent unintended touch input. No driver installation or Bluetooth pairing required. Insert the battery to start using. Includes two replacement tips and a tool for quick tip replacement, helping extend the life of the stylus. Low power consumption with up to 600 hours of continuous use and 240 days of standby time. Automatically powers off when not in use. Features 4096 levels of pressure sensitivity for precise note-taking, drawing, designing, and writing. Product type: Surface stylus Pressure sensitivity: 4096 levels Buttons: Eraser and right-click button Battery: 1 AAAA alkaline battery Dimensions: 140mm (5.51in) in length, 10mm (0.39in) in diameter Compatible models: Microsoft Surface 3 Microsoft Surface Go Microsoft Surface Pro 3 Microsoft Surface Pro 4 Microsoft Surface Pro 5 Microsoft Surface Pro 6 Microsoft Surface Pro 7 Microsoft Surface Pro X Microsoft Surface Laptop 1, 2, 3, 4 Microsoft Surface Book 1, 2, 3 Microsoft Surface Studio ASUS Transformer Mini (T102HA) ASUS Transformer 3 Pro (T303UA) ASUS Transformer 3 (T305CA) ASUS Transformer Pro (T304UA) ASUS ZenBook Flip S (UX370UA) ASUS Vivobook Flip 12 (R211NA)