Do you ever think to yourself, "I wish I had the portability of a hand grinder but also the ease and speed of an electric grinder. Will this ever be possible?" Well today is your lucky day! Hario has granted your coffee wish with the Mobile Mill Stick! The Mobile Mill Stick turns your MSS and MSG hand grinders into portable electric grinders. The mighty little motor powers through beans with ease and efficiency - saving you from cranking hundreds of times on your weekend camping trip. The Mobile Mill Stick's simple, compact design is powered by a lithium-ion battery, which allows you to grind coffee wherever you are with the push of a button. Sometimes, wishes do come true.