Portable navigation is not useful, the effect of how ah,
Quite good, mainly to see the inside of the map software is good
Used, I use the C400 I swam, Valentine's day last year to buy more than and 700, NavInfo map is used, is also good! Recommended to buy a portable navigation or buy the big brands, star search fast, quick way!Recommend several brands: I swam TOMTOM Mio (Jia Ming)
Used steelmate navigator, using Kelid genuine map, navigation accuracy more security. There are other optional features.
