Customer Reviews

The first time that I used a Uni-ball Signo RT, I was in love. I had gotten it in a random set of pens from one of my mother's co-workers who was moving to Japan. I have spent the last six years or so trying to find more of them!

Many pens will try to measure up, but I have yet to find a pen that matches combination of the smooth writing flow and the precision of the .38mm tip. I was so excited to find these pens available on JetPens! I immediately bought the 8-pack, plus two black singles, a lavender-black single, as well as a blue single. I couldn't be happier!

These are like the awesomest pens in the .38 category. The colors are very vibrant and they write smoothly. they are also great for sketching if you sketch with pens

These pens write the best for .38 mm. Now for some of the colors are a little off from it's barrel color. So don't buy these pens based on barrel color. The colors aren't neon-ish either. I like how each color has the same color barrel! No way you can get confused there xD

My favorite pen. Smooth consistent inkflow combined with a super dense ink formula all in a pen that's light and retractable (easy to use on the fly) makes this the first pen I grab for 99% of the time. The set is great and the extra colors really makes it a must for people who are OCD when it comes to organizing.

Awesome, you can't go wrong with these. I keep coming back to buy these, as they are great for writing notes in the hospital.

I love the feeling of writing with UM-138, it's different from UM-151 but both are awesome.

After buying a single blue black Signo, I just knew i had to get more the first time I went to class and took notes with it. It's an awesome pen for those of us who writes fairly small. After I'm done with this batch I'll definitely get more.

These have become my new everyday fave. I bought a few colors and now I am back for the pack. I will be getting extras of the ones I ordered too, the blue black and the lavender black. NICE!!!

By far my very, very, very favorite pens. I love how easily they can take up a rapid note-taking session, switch to an artful doodle, and still maintain a smooth flow. Fantastic if you have super small handwriting (engineer-style) or need to annotate papers/texts. I find they are much finer than the G2s, but write smoother than the Signo Bit (0.18). I stock up on these like crazy, and people keep trying to snatch them away! My only complaint is the lack of a green pen, and I always break off the little plastic clip for some reason. But that's a small price to pay for such a fabulous pen set!!!! AAA+

I love these pens but would prefer capless "click" format in 0.28 size. I love the color options, too. Very smooth, ideal for any micro-writer, hardy when dropped, and no cap to take off. Looking for RT UM-128!

But, I agree with the person who says that its bad that they don't have any green! 3 blues, but no green?! Green is my favorite color, so I consider this they're only drawback.

I really like these pens, and I highly recommend them. They write VERY smoothly, and almost never skip a word/letter. Thinner than the G2's, but easier to write with than the Signo Bit (0.18), its just the "write" size!

Also, I like the retraction. No caps to lose!

quite possibly my new favorite pens! much much thinner than my beloved G2s, but without the skipping of my 0.18 signos. AND... i love that they're retractable. no pen caps to drop/lose! my only gripe? three blue pens... and no green!

These are similiar to the DX, except that the ink that comes out is very thin, thinner than the DX. Similar to DX, it features the smooth handwriting and hasnt leaked for me.

I would recommend this alongside the DX, they are similar but it dpeends if you want the cap or not.

While the 0.38mm tip writes fine lines, I am rather disappointed in the ink reservoir. If you pay close attention, the inner diameter on the refill is much smaller than most normal refillable pens which explains why these pens have such a short lifespan. The inner diameter on this refill is 2mm (approximately 3/32”) whereas other pens, like the Zebra Sarasa or the Uni-ball Signo 0.5mm, have a much wider inner diameter. These pens have a 5mm (approximately 5/32”) inner diameter, resulting in 2.5 times more ink than the Signo 0.38mm RT. It’s a great price, especially for those who love super fine tips. Me? I’ll take the extra ink with a 0.5mm tip.

Amazing, amazing, amazing. Perfect point, beautiful dark purple color, comfortable barrel. Thanks JetPens!!

I don't think there is a material difference between the ink output of the RT/DX lines. Other than the obvious ink capacity of each refill, I prefer the retractability, grip and design in general of the RT. Definitely one of my favourite gel pens - it writes a lot better on 'normal' paper than the Hi-Tec-C line, although I still prefer Hi-Tec-C 0.3mm tips if I have better quality notebooks to use.

I am obsessed with this pen! I bought a whole box of them (10)!!! The fine writing line is perfect for fitting a lot of information in a small space. Especially filling out forms. I used to be a business person and was very strict about using black ink. Whatever. I then switched to blue ink feeling it was more expressive. The blue/black ink gives a perfect balance of color.

To the guy who is complaining about the reservoir size. It isn't that the .38 size has a smaller reservoir in particular, it's that the retractable signo's as a model have a smaller reservoir. Any size of signo DX models will have the same size reservoir. If you want .38 and still want a big reservoir go look at the .38 signo DXs. They also come in .28 and .5 btw. Anyways, the pen itself has been good to me as all the models of signo I've tried have been. Other than that sometimes not having to worry about a cap can be a good thing. Also, the grip is farther down the pen, which is better for me because I hold pens closer to the tip, which with the Signo DX model is pretty far up so I end up holding past the grip anyways.

This is a decent pen. I like the look and feel of the Sarasas better, and I ended up preferring their 0.5mm tip to this one's 0.38 point... it's just too fine for me. Better suited for drawing than writing in my opinion.

Love this pen! The color is gorgeous, and it writes like a dream. Just ordered two more :)

I LOVE this pen! It writes so smoothly and the ink is fantastic. Sometimes I just stare at what I've written because it looks so good!

I love the color of this pen--so much so that I didn't realize until I tested it against my Uni-ball Vision Elite Micro (0.5mm) purple pen that they were the exact same color of ink! So now I have two of the same color, just different widths. If you're looking for this color in a wider width, try the Vision Elite in micro or bold (0.8mm) in purple.

I love the light, ergonomic style of this pen and the fact that the soft grip extends further down the barrel. The barrel is just right, not too slender or too chunky. The best part of all is the fabulous ink color that is suitable for the office as well as more informal venues. The ink is waterproof, writes smoothly, is highly readable and easy on the eyes, and never skips. My only wish is for a greater ink supply.

This pen is simply awesome. The colour is beautiful and it's really smooth too. Writing with such a smooth fine point makes my normally terrible handwriting mildly legible. I'm definitely buying a multicolour set of these on my next order to replace my G-Tec-C set.