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The ultimate aspirator. It is truly portable and operates on AC, DC or the internal battery. Among its many fine features, it is easy to clean and runs up to 45 minutes of operation with a fully charged battery. * Truly portable - operates on AC, DC, or the internal battery * Powerful with 20 in (508mm) Hg maximum suction * Accurate, easy to read vacuum gauge * Easy to clean * Precision vacuum regulator * Up to 45 minute operation with fully charged battery * Internal battery and re-charging system * Includes an attractive carry bag * Flashing low battery indicator light