Free Express Shipping! Neewer Q4 TTL Flash Strobe 400Ws, Wireless 2.4 GHz Monolight, Canon E-TTL II, Nikon i-TTL & Sony TTL, TTL, M & Multi Flash Modes, High Speed Sync: 1/8000 Second, Recycling: 0.01 to 1.2 Second, Flash Duration: 1/209 to 1/10,989...