1. Adjustment of thickness, the most fine can grind 30 mesh coffee powder ( 90%). 2. The bean bin and powder bin are dishwasher safe.Transparent working compartment, clear at a . 3. The blue light works, and the red light flashes to remind charging. Automatic stop grinding without bean. 4.USB-TYPE C cable charging, universal use. 5. Charge for 3 hours. Work for 1 week, grind 3 a day, 25G coffee beans with medium thickness at a time. Name: Electric Coffee Grinder Type: Coffee Mill Size: 75 x 186mm Rated voltage: DC3.7V~ rated power: 13W Bean storage capacity: 25g(coffee beans) Powder cup capacity: 120mL Lithium Battery Power: 1250mAh Power: USB Type-C Suitable for: Drip Coffee, Espresso, French Press, etc. Multi scene use: Portable coffee shop, travel, business trip, , backpack and suitcase can be placed. Color: black Material: ABS+ acrylic Package Contents: 1 x Electric Coffee Grinder 1 x Charging Cable 1 x Chinese and English Instruction 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.