Buy from Amazon.com : http://fave.co/1F7AJKM <br /><br />Neewer? RT-16 Wireless Studio Flash Trigger w/ Four 16-Channel Receivers<br /><br />Product Description : <br />This wireless trigger is control discreteness for camera to trigger hot shoe flashgun synchronously <br />Easy installation low power consumption <br />No any damage to camera <br />High-speed and synchronous for 1200 second <br />Max working distance 30M open area without interference
