Yong Nuo New 2.4GHZ Wireless Remote Control RF-602 C3 for Canon EOS IV, 3, 1D,1DS,1DSMKII,1DSMKIII,D3O ,D60, 10D, 20D, 30D, 40D,50D,50DII,7D ,5D 2.4GHz wireless remote controls The flash sync speed is up to 1/250s its working range is up to 100 meters 4GHz band-16 selectable operating frequencies for eliminating interference A 3.5mm mini phone jack and 6.35mm full size sync jack adapter are provided