Satechi Macro Ring Flash LED (48) Light for Canon Sony Nikon Sigma lenses Color temperature: 5000K-6000K LED Index: Approx. 15GN (all light on) LED-48A Lighting Output: Full power (whole ring) / left ring or right ring Size of Step Rings: 49mm/52mm/55mm/58mm/62mm/67mm Coiled Cord Length: Approx. 190cm