

🖋️ Write sharp, carry smart — the pen that fits your vibe and your pocket.
The Mitsubishi Pencil UMNSP05.46 Uni-Ball One P 0.5 Yogurt is a stylish, compact gel ballpoint pen featuring a 0.5mm fine tip and a stabilizer mechanism for smooth, stable writing. Its unique low center of gravity design and matte yogurt-colored barrel offer both comfort and aesthetic appeal. Lightweight and pocket-friendly, it supports multiple refill types including Uni-ball, Sharpie S-Gel, and Energel, making it a versatile choice for professionals seeking a reliable everyday pen with fast-drying, rich black ink.
| ASIN | B0BZHDS6Y1 |
| Best Sellers Rank | #22,146 in Office Products ( See Top 100 in Office Products ) #507 in Ballpoint Pens |
| Brand | 三菱鉛筆 |
| Closure | Retractable |
| Color | yogurt |
| Customer Reviews | 4.5 4.5 out of 5 stars (452) |
| Date First Available | March 26, 2023 |
| Grip Type | Smooth |
| Ink Color | Black |
| Item Weight | 0.352 ounces |
| Item model number | UMNSP05.46 |
| Line Size | 0.5mm |
| Manufacturer | 三菱鉛筆(Mitsubishi Pencil) |
| Manufacturer Part Number | UMNSP05.46 |
| Material Type | Metal |
| Number of Items | 1 |
| Point Type | Fine |
| Product Dimensions | 4.6 x 0.55 x 0.76 inches |
| Size | 1 Count (Pack of 1) |
T**Y
Great Little Pen - Fits Energel/Sharpie Refill
This pen is quite short, and thick, which gives a really pleasant writing experience if you are into a thicker hand hold. I wouldn't necessary recommend it for super long writing sessions but for under an hour it is awesome. The plastic as a slightly matte feel to it. The uni-ball refill is very nice and is dark black and smooth, it's also a huge plus that it fits sharpie s-gel and energel refills. The click is pretty nice. The clip is a great double as a fidget toy you can "click" by pressing to open and close. I thought I wasn't going to like this part of the pen but actually having a way to release and clip makes it super nice, seems firm enough. They have a spring stabilizer inside which is designed to stay in there with a plastic mechanism which makes replacing the refills super nice.
D**S
Perfect pocket pen IMO.
I have to have a pen with me. Leaving the house without a pen feels like I've left the house without my wallet, phone or keys. These One P pens are a great size for the pocket. These pens have replaced the Pilot G2 Mini as my EDC pen. The ink might be the blackest I've ever used, but writing is not as smooth or consistent as Jetstream ink. Ink dries fast, but not as fast as Jetstream ink. I love the fat barrel. I find it very comfortable. I love that the barrel takes full size Jetstream refills. No more cutting down Jetstream refills to fit Pilot G2 Mini barrels.
L**L
The Pen That Makes Every Other Pen Feel Like a Toy
Smoothest writer I own. Perfect 0.5 line, never blobs, never skips, and the body size feels just right in hand. Ink colors are super clean and vibrant, so it’s easy to color-code notes without switching pens. Once you use one, every cheap gel pen feels awful in comparison.
A**R
Excellent Pen That Reduces Hand Fatigue
I bought this a little while ago now and use it regularly. I like that it can easily be refilled. I use it when my hand is tired from writing and it does help reduce hand fatigue. The ink quality is excellent, very black, and dries quickly. It will smear if you use a highlighter over it soon after writing, but doesn’t if you give it time to dry.
A**R
Smooth Writing Experience with Some Minor Drawbacks
I recently purchased the Mitsubishi Pencil UMNSP05.46 Uni-Ball One P Gel Ballpoint Pen in the Yogurt color, and overall, I've been quite satisfied with its performance. Firstly, the pen writes exceptionally well. The smooth texture of the ink glides effortlessly across the page, making for a pleasant writing experience. However, it's worth noting that the ink is quite thin, which may not suit everyone's preferences. Personally, I prefer a thicker ink, but that's more of a personal preference than a flaw with the pen itself. One aspect that took me by surprise was the size of the pen. At only 4.6 inches, it's shorter than I anticipated. This compact size almost makes it feel like there's not enough real estate to grip the pen comfortably, and I sometimes worry about my hand slipping off. However, the yogurt color adds a touch of style, and I appreciate its neutral tone. The clicker mechanism of the pen is quite substantial and has almost an ASMR quality to it. Additionally, the wide body of the pen, as pictured, is a nice feature. However, despite its apparent sturdiness, the pen feels surprisingly light in the hand. While this doesn't necessarily indicate poor build quality, it doesn't offer the weightiness I personally prefer in a pen. Overall, the Mitsubishi Pencil UMNSP05.46 Uni-Ball One P Gel Ballpoint Pen is a solid choice for those who prioritize smooth writing and enjoy a compact design. However, individuals who prefer thicker ink and heftier pens may want to consider other options.
J**C
Perfect Little Pen
This is my go-to pen it writes smoothly and with great pigment. The size is a little off at first, but once you are comfortable with the size, it sits well in your hand. Love the fact that the clip is adjustable and can be clipped onto many items. just be mindful that the clip is not very sturdy and can fall off easily.
A**Y
it’s a novelty pen
it wasn’t anything impressive. the ink flow was ok. it did skip at times in the beginning but evened out at the end. the short stubby body of the pen may cause hand cramps if your hand is larger. it’s nice to hold but not exactly great to write with for long periods of time. only thing i did greatly like is the clip - very nice and functional.
J**N
Well liked for a reason!
There is a reason why this pen won the stationary award in Japan in 2023. The pen writes great, is a compact and easy to use size, and the ink is nice and dark. Some of these come in different sized cartridges such as 0.38mm or 0.5mm, and that is all personal preference. Overall these are easily in my top 5 favorite pens I have ever purchased and will continue to purchase them.
M**S
Great little pen Fits a small Purse Writes really smooth. HIGH quality Plastic Beautiful color.
A**R
this won the best stationary in Japan a few years ago and it has been the pen i use everyday since trying it out. very comfortable to use and writes amazingly. i have bought several different colors
S**D
Great product. Does the job
L**S
Um den Preis erwarte ich mir schon, dass der Stift einwandfrei schreibt. Tut er leider nicht.
A**A
El más feliz. Soy muy freak de comprar plumas y lápices “especializados” y esta pluma además de ser cómoda deja la tinta de manera suave y fluida además del color negro intenso.
Trustpilot
2 weeks ago
1 month ago