Varia's Hybrid Grinders are Electric Hand grinders. You have the option to use it as a rechargeable electric grinder, or easily remove the motor part and put back the handle and use it as a manual hand grinder. The motor lasts approx. 30 servings on filter grind and around 15 on espresso grind. The low RMP (60) mimics the manual grinding process and ensures the complex taste notes in the coffee.