The SF-560 is built for speed and simplicity. It can copy at around 17 copies per minute, and its super G3 speeds mean it can transmit a fax in about 3 seconds. The unit features one-touch dialing of 20 different numbers, and can store 80 numbers in its speed dial memory, so you will never have to remember a number when faxing. One feature that will likely prove particularly useful is the SF-560''s battery backup. If the power goes out, the unit is capable of receiving and storing incoming faxes for up to 96 hours. With the battery backup option, you will not miss a fax, even during a power outage.