1. Push and slide open the panel on the bottom of the USB Diffuser. Remove the current essential oil bottle cartridge. 2. Remove the protective wick cap and wick from the replacement bottle top. Add essential oil to the bottle using the included mini pump. Screw the wick bottle top back onto the bottle. 3. Insert the essential oil bottle cartridge into the USB Diffuser with the round tab facing down. Slide the panel back on. The diffuser is ready to use.
Note:• Avoid overfilling the essential oil bottle and spilling oils on the plastic components. If oil comes into contact with the plastic, it can damage the diffuser and void the warranty. • When the diffuser is not in use, please remove the oil-filled bottle from inside of the diffuser and place the included wick cap on the wick bottle top for storage.