... Distance: 30m New WANSEN PT-04GY Wireless Flash Trigger for canon nikon Pentax Olympus camera Specifications:4 channels with hot shoe ... /320sStandby time: one yearTriggering life: up to 20,000 times Compatible with:Canon SpeedLite 580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EZ,430EX ... -800, SB-600, SB-28, SB-27, SB-26,SB-25, SB-24;Olympus FL-50R, FL-50, FL-36R, FL ...