what’s the difference between the TT685 and the TT685II?

Godox have been listening to users’ feedback on the original TT685 and have made various upgrades to the preceding model. The most notable of the upgrades is the broader bounce angle afforded by the TT685II. Providing a tilt angle from -7° to 120°, users of the TT685II gain an extra 30° tilt angle over its predecessor. It is also rotatable by 330°, though due to the upgrades made the rotation is no longer the same 360° found on the TT685. The TT68II comes with a TCM function, which stands for ‘TTL Flash Converted to Manual flash’ – effectively easy light metering with TTL mode which is then ‘locked’ into the Manual settings. The User Interface (UI) now more closely matches that of the V1 and V860III, so if you have any experience using either of these then that’s something in the TT685II’s favour. The USB port on the TT685II is now a more typical industry standard of Type-C.