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Akashiya Sai water brush pens in small, medium, and large sizes, neatly packaged and aligned on a wooden table.
Close-up of Akashiya Sai water brush pens showing brush size labels in yellow, blue, and red packaging.
Single large Akashiya Sai water brush pen in red packaging, placed vertically on a wooden surface.
Akashiya Sai water brush pen with pink barrel placed diagonally on a wood surface.
Close-up of Akashiya Sai water brush pen tip capped, showing transparent cap and pink handle.
Akashiya Sai water brush pen uncapped, highlighting the white synthetic bristles and soft lighting.
Close-up of "PUSH" label on pink barrel of Akashiya Sai water brush pen under natural light.
Akashiya Sai water brush pen placed diagonally, fully assembled with cap on, casting soft shadows.
Back view of Akashiya Sai water brush pen packaging, showing instructions and manufacturer info.
Close-up of instructions on Akashiya Sai water brush pen packaging, showing faucet illustration and usage steps.
Akashiya Sai Japanese Brush Pen in packaging with blue body, ideal for watercolor blending and precision work.
Akashiya Sai Japanese Brush Pen in blue body with cap, resting diagonally on wooden surface.
Tip of Akashiya Sai Japanese Brush Pen in blue with soft, tapered brush for watercolor blending.
Brush tip of Akashiya Sai Japanese Brush Pen shown up close, highlighting bristle detail and control.
Body of Akashiya Sai Japanese Brush Pen showing the blue handle with "PUSH" area for easy water control.
Back side of Akashiya Sai Japanese Brush Pen packaging with usage instructions and manufacturer info.
Zoomed view of Akashiya Sai Japanese Brush Pen instructions on how to fill and use the brush effectively.
Akashiya Sai Japanese Brush Pen in packaging with yellow body, ideal for watercolor blending and precision work.
Close-up of Akashiya Sai Japanese Brush Pen showing the fine brush tip and clear cap for detailed arts and crafts.
Tip of Akashiya Sai Japanese Brush Pen displayed clearly for watercolor detailing and smooth brush control.
Body of Akashiya Sai Japanese Brush Pen showing the yellow handle with "PUSH" area for easy water control.
Back side of Akashiya Sai Japanese Brush Pen packaging with usage instructions and manufacturer info.
Zoomed view of Akashiya Sai Japanese Brush Pen instructions on how to fill and use the brush effectively.

Akashiya Sai Water Brush Pen

Sale price$6.00 USD
Tip Size:

Experience the expressive freedom of watercolor painting in a compact, portable form with the Akashiya Sai Watercolor Brush Pen. Crafted in Nara, Japan by a brushmaking company with over 300 years of tradition, this brush pen features soft synthetic bristles and water-soluble dye ink, offering the control of a pen with the flow of a real brush.

Whether you’re sketching on the go, adding color to manga or illustrations, or experimenting with hand lettering, the Akashiya Sai Watercolor Brush Pen allows for smooth lines, dynamic strokes, and effortless blending with water. Choose from three brush sizes—Thin for delicate detailing, Medium for versatile control, and Bold for broad, expressive strokes.

Perfect for artists, hobbyists, and calligraphy lovers alike, this pen combines traditional Japanese craftsmanship with modern convenience. Just uncap and paint—no setup, no mess.

Explore our Japanese brush pens, a harmonious blend of tradition and ease.

Details

  • Length (Pen): 6.7" (17 cm)
  • Weight: 0.35 oz (10 g)
  • Tip Length: 0.4" (1.0 cm)
  • Tip Type: Soft synthetic brush
  • Refillable: Yes (reusable water reservoir)
  • Brand: Akashiya

Akashiya – Centuries of Calligraphy Tradition in Your Hands

Founded in 1624 in Nara, the birthplace of Japanese calligraphy, Akashiya has carried on the art of brushmaking for nearly 400 years. What sets them apart is their commitment to integrity in craftsmanship: unlike mass production, each brush is handcrafted from start to finish by a single skilled artisan. This dedication ensures not just quality, but a soul in every piece.

Akashiya’s iconic brush pens—especially the beloved Sai series—are known for their long, well-balanced barrels and silky ink flow that responds beautifully without pressure. International stationery fans often describe them as offering the sensation of holding a traditional brush, but with the ease of a pen.

Balancing centuries of tradition with a spirit of innovation, Akashiya has expanded their reach beyond calligraphy into colored brush pens and even makeup brushes. Their bold approach to preserving and evolving Japanese artistry has made them a bridge between timeless techniques and modern creative expression.

When you hold an Akashiya brush pen, you're not just writing—you’re experiencing a living heritage shaped by history, passion, and meticulous hands.
Single large Akashiya Sai water brush pen in red packaging, placed vertically on a wooden surface.
Akashiya Sai Water Brush Pen Sale price$6.00 USD

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