Upgraded Unique Heating Aromatherapy FunctionThis aroma diffuser has a separate aromatherapy box which is heated to a constant temperature of 70C. You can use the aromatherapy function only if you do not wish to activate the humidifier. Long press for 3 seconds to turn on/off the aromatherapy function (Flash once represents turn on, flash twice represents turn off) Dual Mist ModeOur Hotsch humidifier diffuser consists of two mist atomizers, the mist mode can be adjusted at any time, a single click on the mist button to open the dual mist mode, a second to open the left mist mode, and a third to activate the right mode. Tips: Auto shut-off after 8 hours (dual mist mode)/12 hours (single mist mode) Diffuser with 800ml Large Water TankEquipped with 100ml water tank 800ml large capacity, this humidifier can work for 12 hours under full water in single mist mode and 8 hours in dual mist mode. No need to add water frequently and have a calm and comfortable night. Night Light Mode with 2 ColorsThe aroma air atomizer has 2 adjustable lighting modes: changing automatic and fixed color. You can adjust it freely via the light button. Press the light button once to turn on the soft light. Press again to turn on the breathable soft light (long press to adjust the brightness), Press again to turn off the light. Rechargeable Essential Oil DiffuserThe fragrance oil diffuser with lithium battery Built-in 1500mAh has high performance work, type-c cable is included, no power battery needed. The most unique feature is that it's rechargeable and portable, so you can take it anywhere without cords. Quiet Operation & Safety Auto Shut-OffSmooth, quiet, ultrasonic operation is ideal for broadcast in a nursery, office, spa, yoga studio or any room in your home. This aroma diffuser will automatically shut off when the water tank is empty or the water level is low to prevent overheating and safety issues