Digi-Slave Flex Ring 6400, Compact Lightweight LED Ring Light with Twin Lights & Removable Diffuser for Digital/Macro Photography, Fits Most Lens Sizes to 77mm Digi-Slave Flex Ring 6400 - Batteries - 72mmm Filter Thread - Diffuser - Digi-Slave 1 Year Warranty Digi-Slave Flex-Ring 6400 64 oversized, super-bright LEDs for maximum power Larger inner diameter that can accommodate any lens size to 77mm Continuous light or flash