GlobalSat SiRF II 12 Channel SDIO GPS Receiver. Features: 1. SiRF Star II high performance and low power consumption chipset 2. Built-in high sensitivity active GPS antenna 3. Optional external GPS antenna 4. LED to show GPS fix or not fix 5. Built-in super capacitor to reserve system data for ...
SiRF III 20-Channel SDIO GPS Receiver with 512mb of memory built-in. Features: 1. SiRF Star III high performance and low power consumption chipset. 2. SD-502 has a built-in GPS omni directional antenna 3. LED to show GPS signal fix or searching 4. Built-in super capacitor to reserve system data for ...