With Maximum support for Nikon i-TTL, including high-speed sync, and a built-in 2.4GHz radio system, theGodox TT685C Thinklite TTL Flashwill make it easy to create both simple and elaborate lighting setups. When mounted on camera, it is an effective lighting tool with a powerful guide number of 197' at ISO 100 and 200mm, a zoom range of 20-200mm, and the ability to tilt from -7 to 90 and rotate 360. As a TTL-capable unit, the TT685C can also operate as a full wireless master or slave unit with TTL functionality.
Operation is intuitive with a rear LCD panel that shows settings. Also, the flash is equipped with a Wireless Control Port for attaching an optional remote control set and it has a 3.5mm sync port for basic wired connectivity. It runs on four AA batteries, which help provide a recycle time of 0.1-2.6 seconds.
This flash is compatible with Nikon Z 6II and Z 7II in when updated to firmware version 3.3 or later.