Surface Pen, Ciscle Digital Stylus Pen: High-Precision 1.0mm, with 4096 Levels of Pressure Sensitivity, Right Click and Erase Buttons for Surface Pro(2017), Surface Pro 4, Surface Laptop/Book_(Black) NEW GENERATION: The fully redesigned Ciscle new digital Pen is equipped with max 4096 levels of pressure sensitivity. This new generation Stylus Pen provides palm rejection technology and allows for an enhanced writing, drawing, virtually no perceptible lag and navigational experience - much like a real pen. THE EASE OF A CISCLE PEN: The Ciscle Active Stylus comes designed with user friendliness in mind. No Bluetooth pairing or driver installation is needed. Built-in Right Click and Erase button design frees customers from a total reliance on the use of a computer mouse. A WRITING STYLE THAT MATCHES YOU: The Ciscle Active Pen comes with two separate sizes of exchangeable pen nibs. For a more authentic on-screen feel, users can choose between a Soft Nib or Hard Nib, depending on the personalized project style that is desired. COMPATIBLITY: The Ciscle stylus pen is partnered with the following devices: Surface Pro(2017), Surface Book, Surface laptop, Surface Studio, Surface Pro4, Sony VAIO Duo 13, Duo 11, HP Spectre x360(2017). *NOT Compatible with Surface Pro1, Pro2 and RT. WE STAND BEHIND OUR PRODUCT: Ciscle offers customers 24/7 online support, a 100% Money-Back Guarantee, a 1-Year Replacement Warranty, as well as standard life-time technical support for their product.