[Long-lasting lifespan] Battery-free stylus, say goodbye to charging cables; Don't need to worry about the potential battery leakage and run-out. [Upgraded Pen Nib] Featuring a smaller pen head, PW550S enables users to get a better view without obstruction when drawing. Also, PW550S supports felt nib replacement. [Slim Pen Body] The 9.5mm diameter of the pen body makes PW550S more pencil-like and good for reducing hand fatigue. It’s highly recommended to traditional artists and people who have intensive workloads. [PenTech 3.0+] PenTech 3.0+ technology providing better pressure sensitivity and allowing you to control the thickness of drawing lines. With the tilt function, the strokes will appear more closely to how they would be by using a real pen. [Compatible models] Only COMPATIBLE with Inspiroy 2, Kamvas 12, Kamvas 13, Kamvas 16(2021), kamvas 22, kamvas 22 Plus, Kamvas 24, Kamvas 24 Plus. Kamvas Pro 13 (2.5K),Kamvas Pro 16 (2.5K), Kamvas Pro 16 (4K), Kamvas Pro 16 (4K) Plus,Kamvas Pro 24 (4K), Inspiroy Dial 2/Keydial/Giano; NOT COMPATIBLE with iPad, other Graphics Tablet.