About Open Box The open-box items are products returned under MiiCoffee Return & Exchange Promise. It looks brand new; includes original parts and box. It's used less than 30 days. It is fully tested and passed our certified process. We offer a full year warranty just like brand new products. Notice: the open box grinder might contains some grinds inside the grinding chamber due to our grinding test. MiiCoffee DF54 single dose coffee grinder is entry level flat burr coffee grinder. It integrated the best elements from DF64 II but is made into a smaller package. The three seated position for the upper burr carrier integrated wave spring makes the grinding chamber absolutely stable. At the same time it achieves minimal retention at the new level. The exit chute is equipped with plasma generator (aka Ionizer) that reduces static to non-existent. DF54 comes with custom made stainless steel 54mm flat burrs that deliver a fluffy grind with minimal clumping and consistent particle size distribution. The integrated Anti-popcorn cover help increase grinding speed. Features and Specifications 54mm Flat Burrs Custom made 54mm stainless steel flat burrs. Plasma Generator (aka Ionizer) The exit chute is equipped with plasma generator (aka Ionizer). It reduces static to non-existent. Anti-Popcorn The integrated Anti-Popcorn disc prevents beans from jumping and helps increase grinding speed. 58mm Transparent Plastic Dosing Cup It comes with 58mm food grade transparent plastic dosing cup. While a portafilter can be used in the portafilter rest, it is best to use the dosing cup, especially if your portafilter isn’t 58mm.  True Zero Retention <0.1 gram Even without bellow this grinder reaches almost zero retention. Blow-out funnel, with lid to completely empty the dead space. Stepless Adjustment Redesigned dial is wrapped with chrome. The included metal indicator makes grind size so much easy to adjust. The adjustment is stepless. It can be dialed in for espresso with high precision. Bean Hopper Capacity 20 grams without bellow, 50 grams with bellow Aluminum body with powder coating finishing  Weight 10lbs Motor 150W AC Input 100-120v/60Hz Size 7” D, 4.5” W, 12” H fits under any kitchen cabinet. One year warranty with MiiCoffee Comparison DF54 DF64 II General Works for a wide range of coffees and methods e.g. filter coffe and espresso Works for a wide range of coffees and methods e.g. filter coffe and espresso Stock burrs Custom made 54mm stainless steel flat burrs Custom made 64mm stainless steel flat burrs Motor AC 150W AC 250W Size Compact Normal Grinding Speed Slow Regular What's in the box MiiCoffee DF54 Single Dosing Coffee Grinder Bellow & Wood lid Plastic Dosing Cup & Rubber Adapter Manual More Easy-Clean Technology : The grinder can be opened for cleaning in a few simple steps without tools. Manual Download DF54 manual from grinder manual