I walked for a while with meinm smartphone and a matching Laufapp.
I did this not really long, because often ripped the GPS signal from, it came about utopian-speed controller and Distazne.
For reasons of portability and accuracy, I decided then to buy your GPS clock.
The choice was quickly on the Run coaches from TIMEX. That was just before the half marathon in Berlin, in which I tested this clock.
The night before I loaded it and played the latest firmware on it. All very easy (the clip for charging and USB connection is awesome.) And easy.
The analysis program is straightforward and easy to understand. You can to the smallest detail his runs (there are dozens of sports to choose from) to evaluate.
On race day I have the GPS signal started it took maybe 20 seconds and the connection status.
You can customize the clock with the display. So I had my speed, distance and time at a glance.
To times to give a taste of the accuracy of the GPS transmitter. After the completed 21,0975km stood on the clock a distance of 21,08km so narrowly 10m difference to 21km, that's really to cope. :)
Conclusion: The clock I give her no more. For the price, can only compete as much Expensive models.
Update:
Unfortunately I have to make a negative comment about the clock.
After 3 months of use, the clock does not establish a GPS signal more.
Before I wanted to send back the clock, I have tried to find an email address to TIMEX out, unfortunately in vain. Thus, I had to call in Switzerland. There I was told that it was probably a defect and I had to send in the clock.
Seems course very inconvenient, because in 4 weeks pending my marathon !!!