Features: Suitable most standard hot hoe cameras, such as for Canon Nikon Sony Pentax ect. With a high guide number of GN33. Support M/Multi/S1/S2 mode. Ultra fast recycle time, up to 3s. 8 levels of output control(1/128--1/1), support fine tuning. Automatically enter into stand-by state if no operation after 4 minutes to ensure power saving. Equipped with large-size LCD screen and backlight, clear and easy to use.