This Yongnuo YN-622C E-TTL Wireless Flash 2 Transceiver Kit is perfect for Canon photographers who want to trigger their flash units wirelessly. The kit includes two wireless radio transceivers that can control up to two flash heads. The mount type is hot/cold shoe and the power source is batteries. The triggering devices are compatible with Canon cameras and the flash head trigger is a wireless radio trigger. The kit is designed for those who want to make their photography easier and more efficient. The location of the kit is A02.