I bought the 650 thinking it would record data ready for downloading when i got home , toslon are at best un helpfull with any info /instructions about their unit , the unit itself came with nothing and all emails have gone unanswered , more we have your money now figure it out , thanks for the reply matt when i figure out what the unit is exactally doing re files i will get back to you , was hoping i wouldnt have to take a laptop fishiing to do maps