VITRUVI's beautifully-crafted Charcoal Stone Diffuser helps you diffuse essential oils throughout your home, while doubling as a stunningly simple piece of decor. The charcoal shade is a sophisticated, sultry matte grey with cool undertones, making it an ideal addition to any space.The Details3-hour setting keeps diffuser running continuously for three hours7.5-hour setting allows diffuser to run for 30 seconds, then pause for 30 seconds for 7.5 hoursHigh-quality BPA-free plastic water reservoirAutomatically turns off when time is up or water runs out (90 ml capacity)Revolve Style No. VITR-WU28Manufacturer Style No. STO-60004-01Actual packaging and materials may vary. Please read labels, warnings, and directions before use.How to UseFill up the water reservoir to the fill line. Add 15 - 20 drops of 100% pure essential oils, then put the plastic cap and ceramic cover back on, and select your time setting