Coupon code: O89O679C

Compatible Shutter sync: 1st curtain, 2nd curtain, high speed sync (HSS/FP), Max 1/8000s sync speed.
Support E-TTL, Manual and Multi flash modes.
High performance master or slave. It uses 2.4 GHz digital radio signals for relieable connection at a distances of 100 meters, including around corners and through walls.
Support flash exposure compensation (FEC), flash exposure bracketing (FEB), flash exposure lock, modeling Flash, E-TTL group ratio (ALL/ A:B/ A:B C), flash zooming (auto, manual), AF assist beam emitter (AF Lamp), PC port triggering strobe flashes.