The good:
- Accuracy of position finding is very good
- The bundled software is excellent
- Battery life is very useful, 15 hours are easily reachable
- Set-up and operation is very simple
- Relatively short time to find satellites (usually around one minute after start up)
- Small size
- Display for set-up and operation data
- Theoretical possibility to geo tag your photos without a computer
The bad:
- Documentation is spartan - you need to go on the internet to find additional information
- Set-up of GMT is not intuitive - you have to figure out the Daylight Savings Time settings first, which is not mentioned in the documentation
- You have to absolutely set your camera time exactly in sync to the GPS time; the unit records a measurement every 15 seconds, so if you are off a few seconds and move your position quickly, like in a car or so, the tag will be a couple of hundred yards off; believe me, that happens more often than you think, and the only way to remedy this is to undertake a manual correction in the bundled PMB software - which, thankfully, is very easy to do ...
The ugly:
- You have to remove the cover to access the SD card slot ... what a boneheaded design decision ...
I use this unit extensively to geo tag my photos now - bought it originally to have this functionality available for my blog ([...])
It took me a couple of (frustrating) days to figure out, why my photos were not tagged correctly at first: the device uses GMT as basic time and to set your local time, you have to figure in the effect of Daylight Savings Time ...
But after that hurdle was taken, the tagging worked great.
The in-device tagging functionality also works flawless - but you have to remove the cover every time you want to insert a SD card. It also drains the battery more quickly.
Because the device will hold several hundred hours of geo logs, there really is no need to tag the files directly on the SD card. It is much more convenient to this via the bundled software, where you can correct single tags if you need to - and believe me, the need will arise as soon as you are hooked, and you only will accept the most precise location data possible anymore ... :)
To sum it up:
The GPS functionality works great, battery life is great, the software is great, the position of the SD card slot is stupid. I am very happy with this little gadget.