Customized Sound: The white noise machine features 8 different sound options, which can be played individually or combined based on personal preference. The 8 sounds include sleep music, thunder, bowl therapy, ocean waves and seagulls, holiday bonfire, stream water, frogs, and birdsong. The device allows for a personalized sound experience. It also includes an aromatherapy function, allowing the addition of essential oils to enhance the surrounding atmosphere. Please note the maximum volume level. Background sounds may help support relaxation, sleep, and focus. This product makes a thoughtful gift for family or friends. Note: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement.