Neewer FT-16 433MHz 16 Channel Wireless Remote Flash Trigger with Receiver for AD180 AD360 Speedlite 16-channel wireless synchronous flash control With remote control lamp, focus lamp and a buzzer switch LCD display shows clear setting/mode info; Two flash power ratio display mode(5.~1. or 1/1~1/128) Up to 1/25sec sync time within 5m distance Receiver operates via power from flash, easy plug and play via USB port connection