Einwandrei - all a matter of correct operation?

At first use I had received no pulse values. So briefly unsheathed the manual and read. Aha, the contacts must be moistened (eg by saliva). That was when the rigid Heart Rate Monitor (which has been included with the Forerunner 305) probably not needed. Had it anyway never done.
So moistened and behold, it works! And since he always works and has not issued any fantasy value.

(Unclip transmitter before) The belt is from me once a week under the water crane cold washed. The rubber is still tight and there is no threads have been formed.

The only drawback is the really high price.

Conclusion: functions properly when it properly operated (moisten the purpose of usage and occasional washing with no detergent).