The Lenovo Stylus Tab Pen AP400U (model SO28D96946 / AP400U) is a lightweight, active stylus designed specifically for the Lenovo Tab M11, Tab K11, and Tab B11 series tablets, providing precise and responsive input for note-taking, sketching, annotating documents, and navigating the screen with a natural pen-like feel. Powered by a single AAAA alkaline battery (included), it offers reliable performance without the need for charging or pairing in most cases—just bring it close to the compatible tablet screen for instant use, delivering smooth strokes and good responsiveness for everyday productivity tasks.
Featuring a replaceable soft tip for comfortable writing and to prevent screen scratches, along with basic pressure sensitivity support on compatible devices, this affordable accessory enhances digital handwriting and drawing experiences on budget Lenovo tablets without advanced features like tilt detection or Bluetooth buttons. Its slim, ergonomic design makes it easy to hold for extended sessions, and spare nibs are often included or available separately, making the AP400U a practical, no-frills companion for students, professionals, or casual users looking to maximize their Lenovo Tab M11/K11/B11 tablet’s potential.
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