-Dual lens design -Bringing 2 times more output than using Fresnel 1st Generation -Bringing X times more output to a 300D light @1 meter -No light leakage -Larger 6-inch Fresnel lens -More stable and smoother zoom in/out design -12-40 degrees smooth spot to flood -Robust and great heat resistance material build -Compatible with Bowens mount lights -Compatible with Aputure Barndoors