"With a transmission range of over 300 feet, 16 selectable channels, and manual control of flash output for up to 6 groups, this highly-recommended flash controller from Yongnuo is a fantastic addition to any photographer's gear lineup, minimizing time spent adjusting multiple flash units and letting you focus on your shooting. The brand is known for solid build quality and ease of use, making for a product line that's accessible enough for beginners and capable enough for professionals. This unit is optimized to work with Nikon equipment, and is compatible with Yongnuo's RF602, RF603, and RF603 II wireless flash triggers. It features zoom control with a 24-105mm range as well as a large LCD interface that makes for easier operation. The push-button controls make navigating menus and settings easy as well, with 1/3 stop power adjustments via the up and down arrows as well as full-stop increments with the left and right arrow buttons.|Easy-to-use interface|Large LCD display|Signal range of over 300 feet|Push-button controls|Controls up to 6 groups|16 selectable channels"