40-speed external grinding adjustment system: This innovative hand-cranked coffee grinder features an external adjustment ring that offers 40 precise grinds, from extra fine espresso to coarse French press. The rotating adjustment ring is clearly marked with a scale, allowing you to visually adjust the grind without disassembling the machine and avoiding the problem of ground coffee residue caused by traditional built-in adjustments. Each setting is precisely calibrated to ensure uniform grinding, allowing you to control the extraction parameters according to different coffee bean varieties and brewing methods, unlocking the full flavor potential of each bean.Mini portable body design: Compact and lightweight for mobile coffee enthusiasts, it easily fits in a backpack or suitcase. The ergonomic curved handle provides a comfortable pedaling experience, so you can enjoy freshly ground coffee anytime, whether you're in a camping tent, caravan or office breakout area. The carefully designed non-slip base ensures stable operation on a variety of countertops, making mobile coffee brewing simple and elegant.30g Golden Capacity Design: The scientifically calculated capacity of the bean compartment can meet the demand of freshly ground coffee needs of 1-2 people, while keeping the machine body lightweight and portable. The unique grinding capacity has been tested and verified by professional baristas and is just right for brewing two cups of fine coffee, avoiding the loss of aroma caused by excessive grinding. The transparent window design allows you to observe the grinding progress and the amount of beans remaining at any time, so you can sense the best time to stop.Modular Cleaning and Maintenance System: The innovative three-piece detachable structure makes cleaning extremely simple, and each component can be easily separated. The special anti-residue design of the inner wall of the powder tank is virtually powder-free, and with the included professional cleaning brush, a complete cleaning can be completed in 30 seconds. The grinding core is secured with threadless instant fasteners, removing it without tools and making regular maintenance more convenient. A thoughtful reminder system alerts you when it's time to clean, ensuring a pure flavor experience every time you grind.Advantage of Ceramic Cone Grinder: The high-density ceramic grinding cone is selected for its superior abrasion resistance and temperature stability compared to metal grinding cores. The special structure of the ceramic crystals maintains a low temperature during the grinding process, preventing heat from destroying the aroma of the coffee. The precisely processed grinding angle ensures that each coffee bean can be ground evenly without producing a powder that is too fine to affect the taste, providing ideal powder distribution for manual brewing, siphoning and other fine brewing methods.