Product Highlights HIGH-BRIGHTNESS FOCUS LED ASSIST LIGHT Half-press the camera shutter to assist the camera with focus by preflash. VARIOUS SHOTS With 6pcs Adapter Rings for Canon DSLR Cameras. LIGHT ADJUSTMENT Adjust the flash ratio of tube A and tube B or just make either of them work. RECYCLE TIME 2.9 seconds recycle time at full power output avoids timeless waiting. TTL auto flash Convenient operation as normal auto exposure. KIT INCLUDES 1 X User Manual 6 X Adapter ring (1pc/each size): 52MM, 55MM, 58MM, 62MM, 67mm, 77mm.   1 YEAR WARRANTY