2 pack 200ml diffuser waterless auto shut-off essential oil diffuser with ultrasonic mist humidifiers safe and harmless for indoor miserwe <br><b>specifications:</b> <br>*material: pp <br>*capacity of water tank: max 200ml <br>*noise level: less than 30 db <br>*working time: 3 hours continuous mode, 6 hours intermittent mode <br> <br><b>working modes:</b> <br>-three settings toggled by the mist button: <br>-red - -continuous mist for 3h <br>-green - -continuous mist until the water runs out <br>-yellow - -intermittent mist (mist 30 seconds and pause 30 seconds) <br>-off-- you may use it as a color changing light without mist <br> <br><b>package included:</b> <br>2 x aroma diffuser <br>2 x adapter <br>1 x user manual