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Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange
Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange

Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange

$1.06

(1,811 reviews)

Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.

Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.

Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange

(1,811 reviews)

Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.

Meet the Uni-ball Signo RT1 Gel Pen, the writing tool designed to make your everyday writing tasks effortless and enjoyable. Its sleek design feels comfortable in your hand for those long writing sessions or quick jot-downs alike. No more accidental clicks in your pocket or bag either—the integrated pocket clip doubles as the push button, keeping it secure and functional wherever you go.What truly sets this pen apart is its pigment-based gel ink, which is not only beautifully smooth but also resistant to water, fading, and even check washing, making it ideal for everything from journaling to signing important documents. And thanks to the pen tip’s ingenious rounded "edgeless" design, you'll enjoy an effortlessly smooth glide across the page every single time. Whether you're jotting down quick thoughts, planning, or tackling detailed notes, this pen is built to keep up with you.Features: Pigment-based gel ink Acid-free, water-resistant, fraud-resistant, fade-resistant, and archival safe 0.5 mm conical nib Retractable with clip Rubber grip Listing is for one Uni-ball Signo RT1 Gel Pen, other pictured items not included.

$1.06 - $19.30

in 6 offers

The lowest price for Uni-Ball Signo RT1 UMN-155 Gel Pen - 0.28 mm - Orange right now is $1.06 at office-japan.jp, compared across 4 retailers.

The all-time low was $1.06 on 23 Apr 2026. That's the lowest price we've ever tracked — a great time to buy.

Prices last updated 11 May 2026.

Size:

0.5 mm
0.38 mm

Price comparison

Price data powered by pricesAPI.io

Last updated at 11/05/2026 13:22:00

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
office-japan.jp

$1.06

Stationery and office supplies mail order "Office Japan" Mitsubishi UMN-155N-28 Orange 4 UMN155N28.4 4902778142493

Delivery $27.87

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Orange

Delivery between 15–25 May $6.85

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Orange

Delivery between 15–25 May $6.85

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm Orange

Delivery between 15–25 May $6.85

Kiichin

$8.00

Mitsubishi Pencil Uni Uni-Ball Signo RT1 Retractable 0.28mm Ballpoint Pen

Harajuku Culture Japan

$19.30

Uni Gel Ink Ballpoint Pen Uni-Ball Siguno RT1 ‐ 0.28mm Orange

Delivery $40.62

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

Body ColorOrange
Capped or RetractableRetractable - Top Button
Clip MaterialPlastic
ClippableYes
Diameter - Grip10.6 mm

Price comparison

Updated about 1 month ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
office-japan.jp

$1.06

Stationery and office supplies mail order "Office Japan" Mitsubishi UMN-155N-28 Orange 4 UMN155N28.4 4902778142493

Delivery $27.87

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Orange

Delivery between 15–25 May $6.85

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm, Orange

Delivery between 15–25 May $6.85

Bunbougu

$2.80

Uni-ball Signo RT1 UMN-155 Gel Pen - 0.28 mm Orange

Delivery between 15–25 May $6.85

Kiichin

$8.00

Mitsubishi Pencil Uni Uni-Ball Signo RT1 Retractable 0.28mm Ballpoint Pen

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

Body ColorOrange
Capped or RetractableRetractable - Top Button
Clip MaterialPlastic
ClippableYes
Diameter - Grip10.6 mm