Can you refill it or is it disposable?

You can refill this, with either a Pilot converter or with a Pilot cartridge. Pilot uses proprietary converters and cartridges.

Can the Con-40 converter be used in this pen?

The Con-B, Con-40 and the Con-70 can all be used in the Pilot Kakuno.

Is the ink waterproof and archival?

Pilot Namiki ink, which is what comes in the cartridge with the pen, is not waterproof or archival. For replacing the ink in the cartridge with permanent, archival-quality, and water resistant ink, I recommend buying Diamine Registrar's Blue-Black Ink, a 3ml luer-lock syringe, and a blunt-tipped dispensing needle at least 3 inches long. 1. Gently insert the cartridge (JUST BARELY) into the pen, only enough to open the cartridge. Pull it back out, rinse the ink out of the pen, and empty the ink from the cartridge with the syringe and needle. Dispose of the ink, and rinse the cartridge, syringe, and needle with clean water. Shake the water out of the cartridge. You can dry it out with a Q-tip if you don't want you new ink diluted at all. 2. Withdraw ALMOST 1ml of the Registrar's Blue-Black Ink with the syringe, and fill the cartridge with it. 3. Insert the newly refilled cartridge into the pen, gently but firmly. Set the pen nib-down in a cup , with the cap on, for 5-10 minutes, so the ink can saturate the feed and reach the nib. And don't press too hard if it's still not writing yet. Give it some more time.

What size cartridge does this pen take?

The PILOT KAKUNO FP takes a PILOT NAMIKI IC100 FOUNTAIN PEN INK CARTRIDGE or a PILOT CON 40 converter.

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Pilot Kakuno Fountain Pen, Clear Barrel, Extra Fine Nib (10816)

Pilot Kakuno Fountain Pen, Clear Barrel, Extra Fine Nib (10816)

Product ID: 253448873

Details

Age range (description)
All age ranges
Brand
Pilot
Colour
Clear
Ink colour
Black
Writing instrument form
Fountain Pen

🔄Retractable closure for convenience

🖤Smooth black water-based ink

✒️Extra Fine 1.0mm nib for precision

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Description

✍️ Write smart, write happy — the pen that gets you!

EFFORTLESS GRIP CONTROL - Hexagonal, dotted grip design for comfortable, ambidextrous use
SMOOTH WRITING EXPERIENCE - Extra fine nib glides like butter for flawless note-taking and journaling
CLEAR BARREL CLEAR INTENT - Transparent body showcases ink level and sleek modern style
PRECISION MEETS PLAYFULNESS - Smiley face nib ensures perfect writing angle every time
TRUSTED LEGACY IN EVERY STROKE - Crafted by Pilot, a century-old leader in premium writing instruments

The Pilot Kakuno Fountain Pen (Clear Barrel, Extra Fine Nib) combines playful design with professional precision. Featuring a unique smiley face nib that guides your writing angle, a comfortable hexagonal grip, and smooth black water-based ink, this lightweight pen is perfect for both beginners and seasoned writers. Its retractable closure and transparent barrel add convenience and style, making it a top choice for bullet journaling, office notes, and creative projects.

Specifications

ASIN	B07KBN9YTK
Additional Features	Erasable, Retractable
Age Range Description	All age ranges
Animal Theme	no animal theme
Best Sellers Rank	#3,737 in Office Products ( See Top 100 in Office Products ) #23 in Fountain Pens
Body Shape	Round
Brand Name	Pilot
Closure Type	Retractable
Color	Clear
Customer Reviews	4.6 4.6 out of 5 stars (3,546)
Drill Point	Extra Fine
Global Trade Identification Number	00072838108166
Grip Type	Dotted
Hand Orientation	Ambidextrous
Hardness	1.0
Included Components	Pilot Kakuno Fountain Pen, Extra Fine Nib, Clear Barrel, Clear Cap, Black Ink, Single Pen (10816)
Ink Base	Water
Ink Color	Black
Item Dimensions	6.9 x 20.6 x 15.7 centimeters
Item Type Name	Kakuno Fountain Pen, Extra Fine Nib, Clear Barrel, Clear Cap, Black Ink, Single Pen (10816)
Item Weight	0.02 Pounds
Line Size	1_0_1_9mm
Manufacturer	Pilot Pen Corporation of America
Material Type	Plastic
Model Name	Kakuno
Model Number	Kakuno 10816
Recommended Uses For Product	Writing
Style	Retro
Subject Character	Smiley Face
Theme	Writing
UPC	072838108166
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
Writing Instrument Form	Fountain Pen
Writing Technique	fountain pen

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