Godox Thinklite Camera Flash TT520II with Build-in 433MHz Wireless Signal for Canon Nikon Pentax Olympus DSLR Cameras Flash Flash duration of 1/300-1/20000s, delivering crisp, clear and vivid images 3 flash modes: M, S1 and S2 for improved versatility and usability 8 variable flash output from 1/128 to full, meeting your flashlight demand Integrated reflection board, giving a highlighted point on the eyes Built-in wide-angle diffuser, creating soft, smooth and natural illumination