The next point is obsolende actual holder, with which the lamp on the handlebars is determined genknipst. This bracket locks via a quick release in plastic barbs. This break in my eyes too much too soon out! Follows it no longer holds its position.
I've marked with a red circle my (two) points of criticism on the two accompanying photographs.
With regard to maturity: The batteries supplied by Sigma are the last crap. Two were already defective at 6 Mona Teten. I Sanyo eneloop exreme 2.450mAh which almost as expensive as these were Sigma light used. These are thanks to this lamp after the light Körber now dropped well over. Thank Sigma!
That was my second and last bicycle lights Sigma.