Navman GPS 3450 for iPAQ H5400, H3600, H3700 & H3800 series pocket PCs Complete Navigational Mapping Solution for your iPAQ H5400, H3600, H3700 &amp; H3800 series pocket PC Type II Compact Flash expansion slot use for maps or any other data or applications Navtech US maps for contiguous 48 states and Hawaii Ready for use with optional external antenna