Power mode:USB noise:Below 36dB color:green、white Built-in battery capacity:2000mAh-4000mAh certified product:ce Speed gear:third gear shell process:injection molding Whether to support charging:support Rated voltage:5V feature of product:water cooling fan Fan classification:spray fan category:air cooler Air supply method:shaking his head Is there a built-in battery:Built-in battery Specification:air cooler Blade diameter:paper pack-ups Operation method:mechanical
