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Yongnuo YN-622C-TX E-TTL II Wireless Flash Controller YN-622C-TX
Amazon.com : YONGNUO Wireless ETTL Flash Trigger YN622C II with High-Speed Sync HSS 1/8000s for Canon Camera : Electronics
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YONGNUO YN622 Series,Wireless Flash Trigger for Canon/Nikon camera
Amazon.com : YONGNUO YN622C-KIT Wireless E-TTL Flash Trigger Kit, with LED Screen for Canon, Including 1X YN622C-TX Controller and 1X YN622C II Transceiver : Electronics
Yongnuo YN-622C II E-TTL Wireless Flash Transceiver YN-622C II