Femobook A2

 Weight: 648g

It has a anti-jam system - its a smart jam detection system that reverses the burrs .

The motor is overpowered

38mm burrs going at 57rpm\magnetic catchup.

The grinder is a all metal assembly

I think the bur is identical to the Q air &

Q2 heptagonal

It's essentially a motorized commandante

two knotches - where the torque matters

fully replaceable batteries

18micron of movement per click.

 10microns of per gap

there is an adapter by fused visions to take pietro flat burrs on this

It also has a autostop function which kicks in when the grinding is done.

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Changing the grind size on the Femobook A2 battery-powered grinder is done via a bottom-adjustment dial, which controls a 40-click-per-rotation system. The grinder offers a wide, precise range (approx. 120 clicks total) suitable for everything from Turkish coffee to cold brew. 

How to Adjust the Grind Size

Locate the Dial: The adjustment ring is located on the bottom of the unit.

Find the Zero Point (Calibration): Turn the bottom dial clockwise until it is fully tightened (burr lock). This is your "zero" point.

Adjust Coarseness: Turn the dial counter-clockwise to go coarser, or clockwise to go finer.

Click System: The grinder features 40 clicks per full revolution. 

Recommended Settings

Espresso: 3–10 clicks from zero.

Pour-over: 50–80 clicks (approx. 1 to 2 full rotations).

Alternative User Experience: Some users report optimal pour-over results around 1.4.5 to 1.5.5 (or roughly 1.5 full rotations). 

Tips for Adjustment

Make Adjustments While Running: To prevent the burrs from jamming, it is recommended to adjust the grind size while the motor is running.

Factory Setting: The factory default is typically 1 full rotation.

Anti-clockwise to Coarse: Remember, clockwise tightens (finer), counter-clockwise loosens (coarser).

Handling Tough Beans: For very dense, light-roast beans, the grinder can handle ultra-fine (Turkish) settings, but may slow down slightly.

Cleaning: The unit features a magnetic, tool-free disassembly for easy cleaning of the burrs when changing between vastly different types of coffee