How to use? 1. Press the LIGHT button first: turn on the LED light, the color changes automatically 2. Press second: choose one of the LED light colors you like 3. MIST Button: Press first: continuous mist coming out. Press continuously to select the time Note: 1. Make sure to use a mild detergent if you want to clean the humidifier. 2. Never fill beyond the Max line. 3. Do not turn on the power when the tank is empty. 4. Clean regularly according to the maintenance instructions to avoid malfunction. 5. When using, wait 3-5 minutes as the cotton swab is not completely wet. 6. For 100ml of suggested adding 2-3 drops of essential oil. Maintenance Instructions: 1. Add a small amount of warm kitchen detergent remover. 2. Clean with water. 3. Use a cotton swab to wipe gently, then use a cleaning cloth to dry it slightly. Color: Black Material: ABS Package Contents: 2 x Humidifier 2 x USB Cable 10 x Cotton Swabs 2 x English Manual Only the above package content, other products are not