VILTROX JY670N i-TTL Macro LED Ring Flash Speedlite Light Flashgun for Nikon SLR Camera close-up dental/mediacl work<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> JY-670N is a professional macro ring lite which is special designed for Nikon DSLR cameras ， the guide number is 14(ISO 100M). Combine with manual mode and AF mode， completely compatible with Nikon i-TTL system， automatically turn on AF focus beam ， exposure compensation and rear-curtain sync. </span></li><li><span class="a-list-item"> Power Controller: 135 x 71 x 61mm </span></li><li><span class="a-list-item"> Flash unit: 136 x 118 x 23mm </span></li><li><span class="a-list-item"> Extension length: 300-700mm </span></li><li><span class="a-list-item"> Compatible Camera: Nikon i-TTL SLR cameras </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41czhpGUHWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41VUcTCo8tL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41U4SCeNWtL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51u79OZkMfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/513FoayYkAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BwOEePcPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4135E1jNaDL.jpg" noproxy>