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You will need to plug this one in.
Sorry, there was a problem. Please try again later.Hello Huizhu- The Ultra model requires an active electrical outlet to operate. It is compatible only with 120V, 60Hz and does not support global voltage. However, we do offer models that are compatible with global voltage. You can find them on our website: https://www.waterpik.com/oral-health/products/. On the left side of the page, select "Global Voltage" to view all units that are suitable for international use.
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