GPS watch just lightweight performance

Really light, we not feel it at all in the wrist.
You can configure everything (as expected), split, the lighting time, details about each display, etc ...
Ideal for that price (paid 165: 215 -50 amazon repayment special offer Garmin end of October 2014).

Immediate detection of cardio belt, GPS detection ten seconds max once outside;

Only downside to Garmin Connect, you can not edit for cutting non-reported breaks, etc ...
Fortunately, there are publishers TCX / GPX fine that can do this and re-import the output after correction.