When a replacement card is requested from Credit One Bank, it typically takes about seven to ten business days for the new card to arrive by mail. Processing times may vary depending on various factors such as the customer's location or any unforeseen delays in mail delivery. In general, customers can expect to be notified regarding the status of their replacement card either through email or through their online account portal. It is important for customers to ensure that their mailing address is current to avoid any further delays. For more specific details or updates about the replacement card process, it may be helpful to check the current web page, where official information can be found.