SPECS:
Model: Godox TT685II Flash for Olympus
Guide No.(1/1 output,200mm):GN≈60(m ISO100)
Flash Duration:1/300s-1/20000s
Flash Coverage:20-200mm;Auto zoom(Flash coverage set automatically to match the lens focal length and image size);Manual zoom;Swinging/tilting flash head(bounce flash): 0-330°horizontally and-7°-120°vertically

Exposure Control:
Multi flash:Provided( up to 100 times,199Hz)
Sync mode:High-speed sync (up to 1/8000s).first-curtain sync,and second-curtain sync
Exposure control system:E-TTL II autoflash and manual flash
FE lock:With <FEL> button or <*>button
Flash exposure compensation ( FEC ):Manual.FEB:±3 stops in 1/3 stop increments( Manual FEC and FEB can be combined.)

Wireless Flash:
Transmitter groups:A , B , C , D
Channels:32 ( 1~32 )
Modeling flash:Fired with camera's depth-of-field preview button
Wireless flash function:Transmitter,Receiver,Off
Transmission range ( approx.):100m
ID:01-99
Controllable Receiver groups:A , B , C , D , E (E group can be controlled by X series flash trigger)

Auto Focus Assist Beam:
Effective range ( approx.): Center:0.6~10m/2.0~32.8 feet;Periphery:0.6~5m/2.0~16.4 feet

Power Supply:
Full power flashes:Approx.330 times
Power source:NI-MH battery ( recommended ) or LR6 alkaline battery*4(not include)
Recycle time:0.1-2.6s ( Rechargeable NI-MH Battery )
Power saving:Power off automatically after approx.90 seconds of idle operation.( 60 minutes if set as Receiver)

Package Including:

1*GodoxTT685II Flash Unit for Canon
1*Mini Stand
1*Protection Case
1*Instruction Manual
1*Color Filter
1*Flash Diffuser
1*Cleaning Cloth