F1-600 is a TTL All-in-One Outdoor Flash. It has strong power, all-in-one lithium battery pack and great portability. When using 2.4G wireless system off camera, etc. With master & slave functions, F1-600 can also be used in combination with self brand, your shooting will become simpler. You can easily achieve a correct flash exposure even in complex light-changing environments. F1-600 flash system is a F1-600 flash with LED light, wireless flash trigger, and a range of dedicated light shaping accessories, offers studio quality light for outdoor and live shooting.