automatic dry herb grinder: made of zinc alloy, 15,000 RPM, 600 mA battery powered grinder with stainless steel blades that grind to fine or coarse consistency according to your needs in seconds. Saves time compared to manual grinding automatic grinder: features a two-direction rocker switch. Not suitable for hard nuts, shells, pepper corns, or beans. Holds up to 2 grams for easy one-handed herbal preparation. Includes a 2-second protection device if stuck, automatically turns off and requires switch reset portable to carry: electric mini compact size and lightweight design makes it small enough to take with you. Sleek, portable design for easy portability and grinding on the go multiple uses: suitable for grinding spices and some kitchen supplies. Can grind pressed powder to allow reuse. Can also be used for entertainment at parties note: for safety reasons, the factory battery charge is 30%. Please charge it in time color: black material: aluminum alloy package contents: 1 x Grinder 1 x USB cable 1 x English manual only the above package content, other products are not included note: light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowed error is +/- 1-3 cm