Details about the GW-52 can still be found on the Locosys website.
You can also find details about the device in my first impressions, written in Nov 2015.
The GW-52 superseded the GT-31 in 2015, when Locosys stopped producing the earlier model.
|Logging||1 Hz or 5 Hz|
|Memory||~35h @ 1 Hz or ~7h @ 5 Hz|
|Battery||~8 hours @ 5 Hz|
|Charging||Micro USB cable|
|Download||Micro USB cable + GW52Util|
|Best Format||SiRF binary, packed (SBP)|
|GPS chipset||probably the SiRFstar IV|
|Additional Logging||Sats, HDOP, SDOS|
|Approved for GP3S||Yes|
|Approved for GPSTC||Yes|