Dedicated to the Leica SF 60 flash, the SF C1 Remote Control Unit enables wireless shooting and control of multiple flashes using 2.4 GHz radio transmission, featuring a 328' triggering range, eight channels, and four groups for flexible multi-flash setups, while supporting high-speed sync up to 1/8000 sec, slow sync, and 1st & 2nd curtain sync modes, with manual adjustment of the flash zoom from 24-200mm, output settings, and compensation in 1/3 EV increments, preserving individual parameters when switching between manual and TTL modes, and powered by three AAA batteries providing approximately 3000 hours of use.