Yongnuo YN-560 II S YN560II Flash Speedlight/Speedlite for Sony a450 a390 a380 a350 a330 a300 a200 a77 a55 a33 a700 a950 DSLR With EACHSHOT Diffuser Supporting high speed continuous shooting: Under the ouput level of 1/8 or below, YN-560 II S can support the 8FPS high speed continuous shooting. With 3.5mm standard PC port, you can use YN-560 II S with the flash trigger via the cable with 3.5mm port. For RF-602, you can use the RF-602 021 / 3.5mm cable Guide number: 58 at ISO100, 105MM The adjustment range of YN-560II S output level is 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, there are 8 levels of putput and each level has 8 ine tuning stalls.