Buy from Amazon : br br Phottix Strato TTL Flash Trigger Receiver Only for Nikon br br TTL flash trigger with EV adjustments - 3 stops in 13 stops br Quick-change buttons and Backlit LCD to adjust EV level mode and channel br High Speed Sync mode - 18000s br Second Curtain Sync mode br Wired and wireless shutter release functions with 100 meter range