Cameraplus - Innovation off -camera 360 degree shooing - Universal Macro 18 Large LED Ring Flash With 4 colors ring diffusers + 8x Adapter Rings (49mm, 52mm 55mm, 58mm, 62mm, 67mm, 72mm, 77mm) for Canon, Nikon, Olympus, Pentax cameras (continuous light and flash support) Guide Number: 21 (18 PCS large LED) / Soft, Shadow-Free lighting rated at3000K-9000K Swith between Flash mode and constant light on 7 brightness levels Unique off-camera 360 shooting Design With 1/4" tripod mount on ring flash Unique Aviation aluminum cooling system for dissipating heat Color Temperature: 3000K-9000K; Effective Distance: 5cm-200cm Power by 4*AA batteries(not included) / Fit Device: for any model of NIKON or Canon brand DSLR