The Pen Uno is touted as one of the most minimal writing instruments designed and, I can't really argue with that. Short of a stick of graphite, there aren't a lot of pens that come to mind that are more minimal than this.
Machined from aluminum, the overall shape of the Pen Uno is sort of a thin "stick" that eventually becomes a bigger "stick" that acts as the mechanism to expose the tip as well as the grip section. It looks pretty cool actually and definitely catches your attention with how sleek it is.
This particular sample is in the "space gray" color variation (Apple colors seem to be a thing right now...) and the finish is really well executed. The finish is uniform and outside of a few places near the edges where things got a little "chunky" (under a macro lens), I haven't noticed any imperfections or issues. Over time, I'd be curious as to how well the pen will hold up to use.
This pen is really light and really, really skinny. The grip section "stick" is about 3/8" in diameter, so is pretty comfortable, but the main barrel piece is extremely thin. That being said, it isn't much of a bother while writing due to it simply resting in your hand.
Regarding holding up to "heavy" use, I'm not super certain this is what it is designed for. While it certainly could be portable via a bag, pen pouch, or pencil case, it is not very easy to transport by other means. This is NOT a pocket pen and one I would see as more of something you'd use at a desk or drafting table.
The barrel is designed around the Hi-Tec C Coleto refill, Pilot's retractable multi-pen variation of the popular Hi-Tec C refill. The ēnsso crew was kind enough to send me a big pack of various refill sizes and colors, but the 0.4mm in blue seems to be my sweet spot.
Admittedly, the Hi-Tec C refill is not a huge favorite of mine due to being finicky. Slow starts, dryness... Amongst a lot of pen people this seems to be a common sentiment, but there are the die-hard Hi-Tec C fans out there that completely love them. If you're in that group, this pen may definitely be for you!
Although, when the Hi-Tec C is working perfectly, it is pretty awesome on smoother paper like Rhodia.
What makes this pen unique is how you retract the tip. Rather than a click mechanism of some sort, the refill stays fixed and stationary in the barrel while the user twists the threaded grip section until the barrel moves its way up and the tip is exposed. Pretty neat! On average, I find it takes around 10 "twists" to get the grip section securely tightened down and the tip exposed.
The refill is secured in place via a long set screw that is removed from the end of the barrel. It is also machined from aluminum and has a matching color scheme to the barrel. One thing I felt with the pen was that it might seem a little on the lengthy side. Even with my bigger hands there is about 2" of thin "stick" overhang into the fleshy part of my hand. More than enough to shave a little bit off which could have possibly put it into a more "pocketable" position.
Although I didn't receive the pencil mod portion of the pen for review, I'm thinking that the added length has something to do with this. The set screw is pretty long (about 2") which seemed strange to me, but thinking more about it I bet this is it. At first I was thinking, "why did they make this pen so long?!"
Overall I think the Pen Uno is pretty slick and is sure to turn the heads of anyone around when you decide to take it out to use. There is this "what is that?" type of reaction when you see it (I know I had that experience). The campaign runs until August 10th and if this pen catches your eye it may be worth taking a look!
One thing that might be cool is to do the pen out of a heavier material like brass...
Thanks again to Ensso for sending the sample to check out.