The white noise machine is made of 8 different noise effects, which can be played individually or together based on your personal preference. Timer function: Short press the timer off button to set 30 minutes, 60 minutes, 120 minutes, and the corresponding LED light will be on for a long time after shutdown. The LED light will automatically turn off. Aromatherapy Diffuser Machine: Having an 200ML water tank capacity, the aroma diffuser. You can also add your favourite taste of essential oil so as to enhance the ambience around you. Please note: It is important not to fill in an excessive amount of water which beyond the max. level line. Cozy Night Light Modes: The upper soft light comes from the spray outlet with the mist and creates a vivid flame-like romantic atmosphere, while the underneath warm night light helps to strengthen it. Plus the turned on background noise, all these are offering you a good sleeping and working companion. Built-in Speaker: Apart from the 8 white noise effects that come with the aroma diffuser itself, you can also connect the machine with your own device and play your favourite music or podcast, enjoying the most out of your leisure time! Moreover, it is an excellent gift choice for you to make for your family or friends. Efficient Plug in Design: You don't have to worry about running out of power any more! The white noise machine for sleeping is plug-and-play through a USB-C cord (included in the package). The intuitive button control enables an easy and effortless operation. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. voltage: AC100-240V Function:white noise / humidifier / aroma therapy / night light / Bluetooth speaker Input current: DC 5V/2A Timer shutdown: 30/60/120min Water tank capacity: 200ML Rate