Summary: 1) Unit did not come with instructions. I downloaded it from the website, but there are several sections that were not translated to english very well. In particular, the "Back Up Function" section is confusing, as shown below.
Summary: My son was excited to receive this as a Christmas gift. Three days later, he was disappointed. I don't know if we have received a "defective" product or if this is common to this unit, but ugh. It WILL NOT keep accurate time. We place his Iphone on the unit and the correct time will set.