Smart stylus, optimized
for Windows Ink

Enjoy new and smart ways to capture your ideas naturally and easily: Bamboo Ink lets you keep your head free for your thoughts and building fresh ideas.

Bamboo Ink

A good idea has struck you? Just pick up your Bamboo Ink to instantly launch Windows Ink or to start your favorite pen-enabled apps, and note or sketch down anything that comes to your mind. You will forget that you’re using a high-tech smart stylus on a digital screen, as Bamboo Ink is designed for natural and authentic writing – on a broad range of pen-enabled Windows 10 devices.

Why Choose Bamboo Ink

Optimized for Windows Ink

Press the top button on your Bamboo Ink to launch the Windows Ink Workspace or to jot down notes and ideas with the pre-installed Sticky Notes, sketchpad, screen sketch or other pen-optimized apps like Bamboo Paper.

Keeping your mind free for your ideas

Bamboo Ink is a pen – the most intuitive and natural tool you can use to write, sketch and annotate. Three different nib types – soft, medium and firm – allow for a personalized, authentic on-screen feel. And its pressure sensing turns every stroke with Bamboo Ink into a precise digital reflection of your ideas.

Comfortable in-hand feel

Whether you take notes, sketch ideas or mark documents, thanks to Bamboo Ink’s ergonomic triangular profile and soft-touch surface you can work with a comfortable and balanced in-hand feel for hours of use.

Take the shortcut

Speed up your work and save time for making and shaping more fresh ideas thanks to two side buttons for customized shortcut functions (depending on your PC / device).

One pen for many devices

Bamboo Ink works with a broad range of pen-enabled devices. The stylus is preset for the Wacom AES protocol. If you’re using a device with Microsoft Pen Protocol (MPP), simply press and hold both side buttons for two seconds for switching.

See the list of tested devices

Capture instantly

Jot down anything that comes to your mind and whenever it comes to your mind – as instantly as with a pen on paper.

Note and visualize

Capture thoughts and even complex ideas intuitively. Switch flexibly between handwriting, sketching and annotating.

Annotate freely

Add comments or sketches to whatever you work on: screenshots, photos, maps, graphs or documents.


Visit the Wacom Store

Nib kit for Bamboo Ink

Nib kit for Bamboo Ink, including 3 different nib types – soft, medium and firm – for a personalized, authentic on-screen feel to choose for your individual writing style.


  • Stylus Size

    length 5.8 in
    diameter 0.4 in
  • Buttons

    2 customizable
    1 Bluetooth connection
  • Nibs

    nib kit with soft, medium, firm nib
  • Color

  • Power source

    AAAA alkaline battery
  • Compatibility

    Most pen-enabled Windows 10 devices
  • Product type Smart Stylus
  • Model number CS321AK
  • Compatibility Compatible with most pen-enabled Windows 10 devices.
    Check for tested devices.
  • Technology Wacom Active ES / Microsoft Pen Protocol
  • Buttons 2 customizable shortcut buttons (depends on device), 1 button for Bluetooth connection
  • Pressure Levels Up to 4098 (depends on devices)
  • Tilt Range No
  • Bluetooth Yes
  • Weight 0.7 oz (including battery)
  • Battery type AAAA alkaline battery
  • Battery life 2 to 5 months, depending on the device – when used 2 hours per day and 5 days a week (this may vary depending how you use your stylus and in which environment)
  • What's included Bamboo Ink (soft nib attached), AAAA battery, quick start guide, nib kit (soft, medium, firm)
  • Limited warranty 1 year in USA, Canada, Latin America, Japan, China & Asia Pacific
    2 years in Europe, Africa & Middle East
  • Additional accessories ACK42416 - Nib kit including soft,
    medium and firm nibs
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