I still use it sometime for navigation when I'm walking. Watch pictures, selfmade movies (grandchildren most of the time) Use is as a MP3 player and so on.
Already many years ago I bought a HAiCOM GPS receiver which fit in the PCMCIA? slot. There's one disadvantage, no SDHC cards possible.
In the GPS receiver is an extra SD slot too, but also only normal cards.
It looks like this one
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Mine is a 305III