I got mine to pair with my Cosori Juni, arriving this summer. 

I have had a 1Zpresso J for many years, so when I learned of the close affiliation Femobook has with them, I thought I'd try it.

Modular, lightweight, but has more heft than reviews lead one to believe (feels well built, despite exterior plastic), metal internals/burr, auto off, whisper quiet (quieter than my 1Zpresso J!), sloped ramp (battery cover) makes pouring beans in hopper (my test held 48g with lid on) a pleasant experience. The magnetic lid and catch cup are functional (Aeropress friendly), and just plain fun to use. 

No stuck beans, no retention. I whack the bottom after grinding, just like I do my 1Z J. I do cold starts every time. 

The ONLY negative, if you insist on calling it that, is grind time. 25g in at 40 clicks from lockup, out of 120, takes 1:48. Auto shutoff means not having to hover over it. Put your filter in the basket, put your beans away, comb your hair, it's worth the benefit of a slow grind, of which their are many proponents. 

I like the portability, or, since I'm not traveling, the maneuverability. I put it beside my Subminimal scale (great combo, btw), and coffee bag, grind, then move it off my cutting board like any other utensil.

Lastly, the 2 18650 batteries, commonly used in flashlights, are user replaceable. When I compared the A2 to other handheld grinders, although the A2 is superior in many respects, I always came back to that thoughtfully designed feature. Femobook deserves my business, because they dared do what other manufacturers have refused to do. 

The quality of the burr is outstanding. My coffee is great. Since I like some body in my coffee, I went from 40 clicks to 35, and could immediately tell the difference. Still smooth as silk, but more flavor. A great cup. That's the extent of my coffee descriptors, haha. Read other reviews for that. Here's a good one. 

[https://www.youtube.com/watch?v=3DbPBFr80ds&t=1s](https://www.youtube.com/watch?v=3DbPBFr80ds&t=1s)

Femobook A2 - End Game Pourover Grinder for $140.00