Customer Reviews

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.

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.

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've used this pen every day for over two years. I keep them in my office, in my handbag and at home. I write best with a slim bodied pen and love the blue-black ink.

This pen doesn't write as small as I hoped, but I like the color and that it doesn't smear. For smaller writing I prefer the Zebra Techno Line .4.

Great Pen, I think! (I actually haven't ordered it but I have used it before!!!) Goin to order!

Tried and true. By far one of my favorite pens (and ink colors) of all time.

I was looking for a pen that has water-proof ink & retractable. This Signo RT 0.38 the best gel pen ever : )

Blue black color is very easy on eyes, and it looks beautiful on cream colored paper. I've been using this for last half year, and now I cannot live without it!! Grip is hard & comfortable (I don't like too soft & squishy grips...), retractable function is really functional. Comparing to Signo(DX UM151) 0.38, Signo RT is much better because it does not smear at all. Some colors in Signo(DX UM151) 0.38 smears so badly...probably due to their differences in ink flow?

I also recommend Uni-ball Signo RT in Blue, for its bright blue color.
Jetpens, will you sell the refill ink by dozen set?

I spilled tea on a notecard the other day and found out that this pen's ink is waterproof. Great stuff!! Love the color and fine point for writing side notes on documents.

Love the color. Love the pen. Add to cart now! Highly recommended!!

I love this pen, it's so smooth and the color payout is amazing. Will definitely buy again!

this is a pretty great pen, especially for this price. i love the size of the tip, which seems very sturdy. the grip is very nice. i would reccomnd this pen

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!!!

Smoothness: okay
Precision: okay
Weight: light
grip feeling: okay
cushion: solid

Overall: Okay. I personally prefer Pilot G-Knock Retractable Gel Ink Pen - 0.38 mm
for better grip and better nonslip feature of the cushion.

These are my favorite pens. MORE COLORS PLEASE! How about a nice red black, a green black, brown!!

Loving it. Pen writes smoothly. Will definitely get refills for it. And the price isn't so bad either.

AMAZING PEN! It writes super smooth and this blue black color is the best! It's definitely the perfect blend of black and blue, not to bright, not too dark.

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!!

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.

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

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!

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.