Note: Blue light flashing: working Red light flashing: insufficient power Red light: charging Blue light: fully charged Technical specifications: Material: ABS Color: black Size: 7.5 x 7.5 x 18 cm Battery specification: 1250mAh Maximum charging current: 1A Grinding weight: 25g coffee beans Powder storage capacity: 120M Use ambient temperature : -10 ~ 40 Relative humidity: 10% ~ 95% Charging time: 200-240 minutes Package contents: 1 x coffee grinder 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause that the color of the item in the photo will be slightly different than the real one. The measurement error is +/- 1-3cm. Shipping Time: We can ship all products within 5~8 business days