Meike MK GT600 2.4G Wireless 1/8000s HSS I-ttl Flash Trigger for Nikon D7100 D7000 D5200 D5100 D5000 D3000 D3100 D300 D300s D700 D600 D90 D80 D70 D70s D60 D50 and All Other Nikon DSLR Cameras High speed sync TTL trigger 1/8000 sec ; Wireless Frequency System: 2.4GHz Support front curtain synchronization, rear-curtain synchronization, low-speed synchronization, and high-speed synchronization Wireless trigger make you get rid of wired constraint Support High-speed synchronous studio strobe and outdoor flash;Support TTL exposure compensation, M manual shift flash,Power saving mode Set the flash zoom in a wirelessly, including Auto zoom and Manual zoom