The new flash Godox TT685II is the successor to the TT685 and incorporates numerous new features and improvements. With a guide number of 197' at ISO 100 the TT685II will easily illuminate most subjects. It also features a zoom head with a range of 20-200mm. Manual power control from 1/1 to 1/128 in 1/3 EV steps. It featured a "quick switch" button which let you swap between TTL and manual mode more easier instead of go into the flash's menu. With 330 degree horizontally and -7 degree to 120 degree vertically tilt flash head, convenient for your shooting events. It's compatible with a variety of light modifers and includes built-in 2.4Ghz wireless technology. It can work wirelessly with compatible system triggers, and othter lights and transmitter units, works as both a transmitter and receiver. With TTL, manual and multi flash modes, fully support 1/8000s high speed sync, first-curtain sync, second-curtain sync, modeling flash, FEC, FEL, etc. The new flash also includes an updated quick-release lock, this ensures the flash stays securely locked onto the camera. This flash runs on four alkaline or NiMH AA batteries which help deliver about 330 full-power flashes and recycle times of 0.1-2.6 seconds. With a LCD screen display for monitor flash working parameters. It also contribute a external power port for external power supply, such as the PB960 battery pack