The Uni-ball Signo might look humble, but it packs some of the most impressive gel ink that we’ve ever used at JetPens. The water-based ink is very smooth, making sure that your thoughts flow effortlessly onto paper. The ink is vibrant no matter which color you choose, and it dries quickly, too.

We also appreciate that all Signo Gel Pens are filled with pigment-based inks that won’t disappear when exposed to water. The standard colors that don’t have metallic or glitter effects are even considered fraud resistant because they won’t be washed away by acetone or rubbing alcohol. Because of its permanence, the Signo is an excellent option for signing important documents or writing checks.

If you look closely at the tip of a gel pen, you’ll notice a small metal ball held inside of a sleeve. When you write, the ball rotates inside the sleeve, coating its surface in ink and applying that ink to the paper.

Most gel pens have sleeves with sharp corners, which can scrape along the writing surface. The Uni-ball Signo RT and RT1 Gel Pens feature “edgeless tips” with rounded corners. They reduce friction against the paper, allowing them to glide effortlessly across the page.

Uni-ball Signo Gel Pens are available in six tip sizes. Some product lines offer more tip sizes, while others have only one. Although all Signo Gel Pens write effortlessly, broader tip sizes have a smoother writing feel than finer tip sizes.

The Uni-ball Signo comes in a huge range of colors. Different product lines offer different colors and finishes. We focused on Signo Gel Pens for writing in the table below. We share writing samples for gel pens that are better suited for crafting in the section further down.

With its comfortable rubber grip section and balanced weight, the Signo UM-151 is great for everyday writing. It’s available in an impressive range of colors as well as three tip sizes: 0.28 mm, 0.38 mm, and 0.5 mm.

The UM-151 is also known as the Signo DX.

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Signo UM-100 are for writers who just need a dependable pen. They have simple bodies and are available in four standard ink colors in 0.5 mm, plus two 0.8 mm metallic colors for crafting (which you can see below).

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Those who prefer writing with broader pens will appreciate the Signo Broad UM-153 and Impact, both of which have 1.0 mm tips. The opaque ink won’t skip while you write, though we should mention that the ink will take a little longer to dry. Both pens are available with craft-friendly inks, which we discuss further below.

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The Signo RT has a retractable tip so you never have to worry about a misplaced cap again. It features an “edgeless tip” design that allows the pen to glide across the paper.

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The Signo RT1 has a sleek, simple look. Its rubber grip section covers a large amount of the barrel, so you’ll have a little padding no matter where you grasp the pen. Like the RT, the RT1 includes an “edgeless tip” design.

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Another retractable option in this gel pen lineup is the Signo 207. The standard 207 has a transparent barrel, while the 207 Plus+ has a matte black barrel. Unlike the other pens, the 207 Needle has a precise needle point tip.

Professionals can check out the Signo 207 BLX, which features off-black ink that adds a little personality to your writing without standing out too much.

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Thanks to its sophisticated metallic barrel and complementary black accents, the Signo 207 Impact is a classy pen that you can carry anywhere. It’s available in one 1.0 mm tip size that ensures your notes and signatures stand out.

Choose from the capped 207 Impact or the retractable 207 Impact RT.

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Writers who grip their pens tightly and experience hand cramps should definitely check out the Signo 207 Premier. This ergonomic pen has a thick body that’s easy to hold, which helps you loosen your grasp. It also has a soft, silicone grip section that cushions your fingers, relieving the pressure on your hand.

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The Signo 307 is very similar to the 207, but it’s set apart by its special ink formulation. It uses cellulose nanofiber technology (CNF), which increases the smoothness of the ink. You can write quickly without experiencing any ink skipping.

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We’ve mentioned this gel pen in the section above, but the Signo UM-100 and its gold and silver inks deserve a mention here. Their 0.8 mm tips aren’t too thick or too thin, so they’re perfect for adding metallic accents to your craft projects. We love how they look on dark paper.

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The Signo Broad UM-153 and Impact are great if you prefer broader lines. The white ink gel pens are especially beloved for their high opacities, which are especially useful for adding highlights to artworks. The Impact is also available in metallic colors.

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The metallic effect of the Signo Noble Metal gives your scrapbooks and holiday cards a lovely sheen. The colors are more vibrant on white paper, but they can be used for subtle accents on dark paper.

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The Signo Sparkling adds fun shimmer to your craft projects. Its 1.0 mm tip puts down a thick line that shows off the glitter beautifully. It writes on both light and dark paper, but the glitter looks best on light paper.

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Are you ready to try out the Uni-ball Signo? Or are you already a fan who’s searching for a quick and easy way to add a bundle of Signo Gel Pens to your pen case? Check out our JetPens bundles! You can pick from sets that include a variety of colors, or even multiples of the same version (especially handy if you go through white pens quickly).

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