MUJI Ultrasonic Aroma Diffuser The Aroma Diffuser uses ultrasonic waves to vaporise water and the essential oil in the tank to produce a cool, dry, fragrant mist. The white cylinder also houses a lamp that shines with an ambient glow and has 2 light settings. It's flame free and safe for use around children and pets. Size: Dia 8 x 14 cm Weight (not including AC adapter): About 220g Duration: About 3 hours Built-in Timer: 4 sets available: 30 / 60 / 120 / 180mins Water Tank Capacity: Approximate 100ml Mist Amount in 1 hour: About 25 - 30ml LED Lights: 6 Adjustable Brightness: 2-stage Power Consumption: About 20W / hour Suitable to be placed at the following places: On a side table in the bedroom or living room. Suitable as a gift for those use are using aroma diffusers for the first time. Main Materials: Water tank, outer cover, inner cover bottom, measuring cup: polypropylene Accessories: AC adapter, measuring cup, user’s manual *This item is under 1-year warranty from date of order ID completion.