This seemingly avant-garde and practical cap light is not a new packaging for mineral water, but a "mineral water bottle" accessory created by a Japanese design agency called "Ideaco", adding a small LED to the cap. The lamp, after lighting, can form a dreamy light and shadow effect in the water bottle under the action of refraction and reflection.
Cap LED light
Cap LED light
Cap LED light
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Dongguan Andu Electronic Co., Ltd. , https://www.idofuse.com