When setting impractical (ok. One does normally only once). Then at first 200km ride very poor reception (there were only recorded 87km, there was no longer present at every little vibration of radio contact). Then went to the first week suddenly nothing more. Battery replaced -> no success. Bounced! To date, I stopped actually Sigma for a good speedometer manufacturers. But thanks to this model, I must say: no more SIGMA SCRAP
