The Spectec SDG-810 is a 20-channle GPS receiver in the size of a SD card. This SDIO GPS Receiver is powered by the SiRF Star III chipset and has built-in GPS omni-directional Antenna and colored LED to show GPS signal fixed or searching.
Other than norma GPS functionality, the Spectec SDG-810 has an expansion slot supporting up to 2GB of Micro SD cards.
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