I had a little doubt taking this remote "noname". As soon erased from the opening of the envelope: the product looks solid, well finished and is mechanically snug. In ditto use the remote fits comfortably in my (large) hand, the trigger responds to the hair, the lock "Bulb" fulfills its role very well. Lastly, 3m cable, against only 1m for Nikon version are really an advantage! Having the remote control for a few days, I have not misused, but I can not give any idea about its medium and long term service life; That said, I do not worry too much as the product looks well.