Introduction The Macro Ring Flash can produce a ring of light that reduces shadow which is excellent for taking macro shots. The Flash tube is mounted in front of your lens producing light that wrap around the objects. 7 adaptor ring is included to enable flashlight to couple with lens. Specifications: Max Sync Speed:1/320s Type: Close-up Guide No.: 14/46(lSO100,in meter/feet) Effective Distance: Approx,20cm-5m Color temperature: 5500K Flash coverage: 80°degrees in either direction Firing configuration: Two flash tubes can be fired together or single Flash ratio control: 1:8~1:1 ~8 in 1/2-stop increments Flash exposure compensation: Manu al,FBE:lN 1/3-stop increments Flash exposure confirmation: Flash exposure confirmation lamp lights Focusing lamp converage: Approx.40°top and bottom and 45° left and rights/On time:Approx: 20sec. Recycling timer: Approx.0.1~5sec. Supply battery: 4xAA/LR6 alkaline batteries Battery life: Approx.100~800 flashes(with AA/LR6 alkaline batteries) External power source: Compa ct battery pack CP-E4 FLASH COMPATIBLE ON CAMERAS: Nikon: D7000, D5000, D5100, D3200,D3100, D3000, D3 series, D800,D700, D2 series, D300 series, D200, D90, D80s D70 series, D60, D50, D40 series, F6, Nikon COOLPIX: COOLPIX8800, COOLPIX8400, COOLPIX P5000, COOLPIX P5100,COOLPIX P6000 Olympus E5 E620 E600 E420 E450 E520 E3 Pentax K-r K-x K-5 K-7 K-m K-10D K-200D FUJI: S5 Pro Package includes: MK-14EXM LED Marco Ring Flash for Nikon x1 52mm 55mm 58mm 62mm 67mm 72mm 77mm Adapter Ring x1 Leather carrying bag X1 Chinese and English Manual x1 Warranty Card x1 (Original manufactory package)