MUJI Ultrasonic Aroma Diffuser 3 oz NWT, never opened. The diffuser uses ultrasonic waves to diffuse and effectively disperse a fragrant mist around the room. This small diffuser has 2 adjustable LED light levels and 4 sets of timers. Maximum mist time is 3 hours. - How To Use: Fill the reservoir to the max line. Use 2-4 drops of essential oil in the water. Replace the top of the diffuser Press the "Mist" button to turn it on. Press the "Mist" button to adjust timer. - Dimensions: Dia. 8.0 cm x H 14.0 cm (Approx. Dia. 3.1 x H 5.5 ") - Capacity: 100 mL (Approx. 3.4 fl oz) - Weight: 650 g (Approx. 22.9 oz) Last photo is screenshot of Google translate of the Japanese writing on the label. Does NOT include essential oil.