Burrs: Manufactured in Europe, the Preciso’s 40 mm conical burrs grind coffee at 1.5 to 2.4 g/sec. depending on the setting. The Preciso burrs are exceptional for espresso, drip, manual brewing methods and Press Pot. Gearbox: With GB 2.0, Baratza has significantly increased the strength and durability of the drive transmission while decreasing noise. Grind Adjustment: Macro Adjust: Turn the hopper and with 40 settings you can quickly adjust from fine for espresso to coarse for French Press. Micro Adjust: A secondary micro adjust lever further divides each of the 40 Macro positions into 11 distinct steps. Grinds Left in Grinder: To maximize freshness, the Preciso minimizes the ground coffee left in the grinder. Brewing Methods: The Preciso is exceptional for espresso and manual pour brewing methods. Motor: A powerful, high torque DC motor effortlessly drives the burrs. This motor turns slowly resulting in cool, quiet operation and permits long grinding duty-cycles. Calibration: An innovative burr calibration system ensures that each grinder has the full range of grind. Speed Control: With unique speed control, the Preciso uses a combination of gear and electronic speed reduction to control the rotation of the burr to 500 RPM. The electronic speed controller is adjustable from 405 to 495 RPM in the event that specific user conditions require modification of the speed. Portaholder: The Preciso comes with the Portaholder which permits hands-free grinding into an espresso portafilter and makes clean up a snap. Timer Switch: The Preciso has a sixty-second timer with segmented graphics, for easily repeatable grind times. Cleaning: Burrs are easily removable with no tools, making cleaning very easy.