Buy on Amazon.com : http://www.amazon.com/gp/product/B00I44F0RM?tag=catfoodrevi0a-20 <br /> <br />Yongnuo YN-622N-USA i-TTL 2.4-GHz Wireless Flash Trigger Transceiver Pair for Nikon DSLRs US <br /> <br />Full i-TTL compatibility with Nikons wireless remote system for intelligent metering and complex control of off-camera flash units <br />24-GHz transceiver pair with 7 channels and 3 flash groups for maximum flexibility even in crowded environments <br />High-speed sync up to 18000th of a second and rear-curtain sync for creative control <br />Auto-focus assist lamp for difficult focus situations in dim lighting <br />Returns and service promptly performed in the USA for orders that are sold by and shipped from Amazoncom must provide Amazon invoice copy for return authorization
