NOTE: This is professional essential oil diffuser. We recommend using pure essential oils to avoid clogging the atomization port, to avoid reduce the machine's service life. (NOTE: This version is Basic Version, CANNOT use APP to control!!! If you wanna try APP control, please select APP Control.) NOTE 2: This version is MANUAL OPERATION Only, this waterless essential oil diffuser has 4 level(light) to adjust. Level 1: working 5s, pause 120s; Level 2: working 5s, pause 60s; Level 3: working 5s, pause 30s; Level 4: working 5s, pause 10s. We recommended: Level 3/4 for 1 hour, and then change Level 1/2, it all depends on you. TOP-QUALITY MATERIALS: Those essential oil diffusers made with the finest materials, this oil diffuser ensure durability and long-lasting performance. UNPARALLELED AROMA: This aroma diffuser with pure essential oil blends to choose from, waterless scent diffuser release fresh, natural scents to fill your home with comfort and relaxation. PORTABILITY AND CONVENIENCE: This essential oil diffuser with its compact and lightweight design, our scent diffuser is easy to move and use in various locations, allowing you to enjoy the benefits of essential oil diffusion wherever you are. EASY TO USE: This aromatherapy diffuser is easy to use and we provide professional guide videos, our essential oil diffusers provide effortless operation and peace of mind.