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-622N-TX - Flash Controller - Yongnuo Store
Yongnuo YN-622C-TX E-TTL II Wireless Flash Controller YN-622C-TX