Pixel King Pro Radio Flash Trigger Kit 1 Transmitter+2 Receivers 1/8000s TTL LED Screen Display for Canon Cameras and Flash Speedlite as YN622c 1.pixel king pro for canon support e-TTL, TTL, M functionsm,with Sync Speed: 1/8000S 2.Wireless channel: 15 fixed channels and 1 automatic channel 3.FSK 2.4GHz radio system,Remote distance: 300m or above 4.Compatible most canon camera,and can fire pixel mago,pixel x700c,x650c,pixel x800c,pixel x800c pro 5.Come with One Transmitter and Two Receivers,best choice for those who control one more flash.