Designed for use with Nikon DSLR cameras with a hot shoe, this Insignia™ NS-DXFL2N external TTL flash features S1 and S2 slave modes to enable off-camera use with your camera's built-in flash as a master trigger.
I'll admit that I bought this flash not expecting much but was pleasantly surprised when I finally did receive it. Decent build, decent light output, and more features than one should expect for the price paid. Worked well enough with my Nikon D5300. I used it indoors for portraiture.
Had it for about a month and took about 100 shots with it before it stopped working. It would turn on, but the flash refused to charge up. The "flash ready indicator" light would flicker, but would never become steady, indicating that it was ready. I even waited upwards of 20-30 minutes hoping that it would become ready, but never did. I replaced the batteries with two other sets of fresh batteries, and that didn't work. Eventually I returned it for a refund.
Great flash when it worked, but didn't seem to hold up long enough. Maybe I got a defective unit. Not sure I would try again.