Specification Brand : BUZHI BulletPoint1 : Supports E-TTL functions (FEC, FEB, Front and Rear-curtain sync, FE lock, Modeling Light), support for camera menu accessible. BulletPoint2 : Double-Tube Macro Flash, flash ratio can be adjusted, there are 8 levels (1/128-1/1) for the intensity adjustment for the flash control, total 22 levels fine tuning; the tube A and tube B can flash individually, the flash index is wider and more practical. BulletPoint3 : The Flash Coverage: Vertical angle: Upwards,downwards 90 degrees; Horizontal angle: inwards 60 degrees,outwards 30 degrees; The rotate degree of the adapter ring: upwards 50 degrees, downwards 30 degrees; The flash tube can be installed on the tripod for use. BulletPoint4 : Ultra-fast charging recycle system, just take 3 seconds at full output. Even if not using the brand new batteries, it just takes 4~5 seconds to recycle. BulletPoint5 : The LED focus assist light is divided into low light and highlight mode,achieve rapid precise focus. ItemName : BUZHI YN24EX E-TTL Macro Flash Speedlite 5600K with 2pcs Flash Heads and 4pcs Adapter Rings for 1Dx 5D3 6D 7D 70D 80D Cameras ItemTypeKeyword : on-camera-shoe-mount-flashes Manufacturer : BUZHI PartNumber : MSUS-D4620-HKX ProductDescription : power socket to meet your higher demand of recycling time and no longer missing the wonderful moments. --Automatic Settings Saving YN-24EX can automatically save your current operating settings to convenient your next use.