Neewer NW680/TT680 HSS Speedlite Flash E-TTL Camera Flash for Canon 5D MARK 2 6D 7D 70D 60D 50DT3I T2I and other Canon DSLR Cameras E-TTL II flash mode: easy and fast to snap special moments Multi flash mode: easy to record a chain of fast-changing moves Flash recycling: .1-5s, compatible with external power pack HIGH SPEED SYNC Wide apcel, extending flash coverage to14mm, creating soft and natural illumination