About Product:TRIOPO Flash Light TR-950 general purpose Flash Canon Nikon PentaxFlash index (GN): 36 (105 mm focal length, ISO 100, to meters for units) powered way: 4 Gold 5th, battery Flash mode: M/MULTI/S1/S2 battery Flash times: 100-1500 times back time: about 2.9 seconds (using AA alkaline battery) lamp upper and lower rotating angle: upper and lower rotating angle-7 degrees-90 degrees lamp around rotating angle: around rotating angle 0-360 degrees color temperature: 5600K ± 100K light induction distance: indoor 15 meters, Flash control outdoor 10 meters: 8 levels of light control