Featuring with voice prompt function, power saving mode, overheating protection and auto save function, the flash is practical.With multiple adapter rings, it can be used with a variety of aperture lenses. The left and right lamps can independently adjust the flash power. Recycling time is only 2.9s in all-optical and full-output mode.Made of ABS and metal material, the maron ring flash is durable.The length of the flash trigger host is 14.3cm, the width is 7.3cm, and the thickness is 6.1cm. The length of the macro ring flash is 13cm, the width is 12.6cm, and the thickness is 2.8cm.It is suitable for Canon camera.Item Name: Macro Ring FlashMaterial:ABS,MetalBatteries: 4 x AA Batteries (Not Included)Color Temperature: 5500KFlash Index: GN14Flash Mode: Auto Mode TTL, Manual Mode M, Strobe Mode MultiFlash Time: 1/200s-1/20000sRecycle Time: about 2.9s at Maximum PowerSize Details:Flash Trigger Host: 14.3cmx7.3cmx6.1cm/5.63"x2.87"x2.40" (Approx.)Macro Ring Flash: 13cmx12.6cmx2.8cm/4.12"x4.96"x1.10" (Approx.)Notes:Due to the light and screen setting difference, the product's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Macro Ring Flash1 X Micro Base8 X Lens Adapter Ring1 X User Manual1 X Storage Bag