HD-130 Macro LED Ring Flash for Can, Nikon, Pentax, Olympus Cameras. Features guide number: 46. Eight brightness levels. Includes eight mounting rings from 40.5 to 77 mm. 46 LEDs rated at 3000-15000K. Soft, shadow-free lighting. Exposure time: 1/100s. Use 4 AA batteries. Flash range: 5cm-2m. Accessories include: 40.5mm, 52mm, 55 mm etc. Taken the diffusers x 3 (orange, blue, transparent).