Adjust the grind size This portable coffee grinder gives you a clear, fine-to-coarse adjustment for espresso, pour-over, or a super fine 30 mesh coffee powder. The transparent chamber lets you watch the beans move, so you can stop when it looks right. It's compact too, at 7.5 x 7.5 x 18 cm and 450 g. See it while it works The ABS body feels smooth in hand, with a copper motor inside and dishwasher-safe bean and powder bins for easier cleanup. A blue light shows it's running, red light blinks while charging, and it stops on its own when the grind is done. Handy for RVs, tiny homes, and travel. Charge once, use all week This USB C coffee grinder uses a 1500 mAh lithium battery and charges in about 3 hours for up to a week of use at 3 grinds a day. The electric coffee grinder comes in Black / USB or White / USB, and includes a USB Type-C cable.