Small compact body with quick lock Syncs with YONGNUO YN560 III/YN560 IV/YN660/YN968N/YN860Li flashes Group display has paging and scrolling modes. You can customize the maximum group. M/Multi Flash Modes Flash power and focal length remote control adjustment up to 6 groups Compatible with RF602/RF603/RF603 II/RF605 transmitters 16 channels with 100 meters transmission distance Large panel, easy to use Compatible with RF602/RF603/RF603 II/RF605 remote shutter