Satmap 10 hiking GPS , great to stash in the van and explore - nice and compact . Charges with the supplied USB lead using a fag lighter socket and USB converter or a plugged into a 240v phone charger . Pic 3 shows the charging port which has lost its cover- a common problem , never been an issue . No instructions but they`re easy enough to use and of course available on- line ... A quick look at the map toggling :- Does everything its supposed to do , basically these come loaded with a base map and you buy the cards as and when you need them , from county size maps to full UK but the bigger the map the longer it takes to load . There are plenty of cards available on Fleabay at around a tenner for the popular `county` series up to silly money for the platinum 1:10k . I`m upgrading and selling a few cards - i`ll throw one in if it`s useful - choose from the list or make me an offer for a few ! *Clywed *Lothian and borders *Wiltshire *Lancashire , Greater Manchester and Merseyside *Cumbria *Greater London *Hereford and Wocestershire *Somerset £45 Posted or collection from SW That London .