40Hz Gamma Light Sound Device with Earbuds, Brightness and Volume Adjustable 250951

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상품명 40Hz Gamma Light Sound Device with Earbuds, Brightness and Volume Adjustable 250951 About this item 40Hz flickering light precisely synchronized with 40hz clicking sound, as pe r MIT research for gamma entrainment. Wearable cable-free design, allowing you to continue activities and work uninterrupted. Features 3 brightness levels and volume control of the earbuds. Equipped with USB Type-C charging port. Comes with a USB-C earbuds and a 3.5mm headphone converter. > See more product details one option 1263 Show more