Take care of yourself, relieve stress, and dramatically change your ambiance with our aromatherapeutic diffuser. HOW TO USE 1. Connect power to power DC jack. 2. Fill water sink with water not higher than water level line. 3. Add 4 to 5 drops of water-soluble essential oil. The amount of oil added can be more or less according to the setting of the device. 4. Replace diffuser cover, install extension tube. 5. Replace ceramic case. Make sure cover silicon o-ring. 6. Press on/off button and select the setting. POWER CONTROL MODE INSTRUCTIONS 1 | Continuous Mode. Red Light: Mist emits continuously. Automatically turns off after 4 hours operation 2 | Continuous High Mode. Blue light: Mist emits continuously. Automatically turns off after 2.5 hours of operation 3 | Intervals of 30 Seconds Mode. Green light: Mist emits at intervals of 30 seconds. Automatically turns off after 6 hours operation 4 | 2 Houwoolr Timer. Purple light: 2 hours mist emits continuously 5 | Power Off No light: mist off.