First, I highly recommend visiting Cafict.com (an informational coffee website based in Japan) and checking out the highly detailed review of this grinder. Her review is the most detailed write-up you will find on this grinder and will help you out with the basics. This hand grinder is newer compared to the more recognized brands, but that doesn't mean it isn't great. Now for my thoughts, this grinder uses the same burrs as a lot of other hand grinders in its price range but what sets it apart is the number of clicks, therefore fine adjustments you can make with this grinder. It is these fine adjustments that make it the best hand grinder for espresso and a worthy rival to the more recognized brands. The hand grinder is beautifully crafted, but it has two weaknesses. 1. It can only hold 26-28 grams of coffee at a time, this isn't a bad thing, but for people who want to brew more than 2 cups, get ready for an extra 2-5 mins of work. 2. when grinding it is easy to grip the canister part and loosen/twist it off, therefore causing a spill of beans. Note, this will only happen if you are not paying attention whatsoever and don't tighten before grinding. These two faults might be a deal-breaker for some, but the pros outweigh the cons. Also as the other review stated, the static buildup in the canister is nonexistent and beans have yet to get caught up after a month of heavy usage ( I grind 40 grams of beans a day.)

my personal pour-over chart with temperatures between 88c-91c
120-110: extra coarse (cold brew, poorly made french presses)
100-90 clicks: coarse (perfect for french press)
85-80-medium coarse (still solid for french press, flatbed drippers, and certain styles of pour-over methods)
75-70: medium (perfect range for testing a new bag of coffee with any pour-over dripper. this is your base and sweet spot)
65-60- medium-fine (great way to limit test and then potentially go a few clicks coarser. This is for methods requiring faster extractions with less time like less than 2 mins total brew time)

Two of the most common complaints with hand grinders are static build-up and beans getting caught in the internals of the grinder and not going through the burrs.
This grinder does not suffer from either of these problems. In fact, I can’t come up with a single complaint. This grinder performs at well as a popular German grinder costing 2.5x as much. And build quality is fantastic.
The grinder performs beautifully on light and medium roasted beans. And you can get the grinder clean without disassembling it by using the soft brush that comes with it. I used the grinder every day for two weeks before disassembling it and there was almost nothing to clean, just a faint light oil residue after wiping the internals with a soft cloth.
I’m getting fruity tasting pour overs using this grinder every time.