• High max. guide number 52 (meters), High max. guide number 170 (feet) for ISO 100/21° and 105 mm

• Vertical (+90°) and horizontal (300°) swivel reflector
• Illuminated touchscreen display with automatic swivel function (90°)
• Simple operating concept
• Motorised zoom for 24–105 mm illumination
• Spot and extended zoom
• Integrated wide-angle diff user for 12 mm illumination
• Flip-out reflector card
• Modelling light (permanent light to check shadow)
• Integrated autofocus flash metering
• Flash readiness indicator and correct exposure display on unit and on camera**
• LCD flash range display
• Automatic unit shut-off
• Metal base* with quick lock

* Excludes Sony model

**   Functions depend upon camera being used

• TTL flash mode (digital only)
• Manual flash mode with 22 partial lighting levels
• Servo flash mode with learning function
• HSS – high speed synchronisation**
• 1st and 2nd shutter curtain synchronisation
• Manual flash exposure correction for TTL flash mode
• Automatic fill-in flash

**   Functions depend upon camera being used

Canon version

• E-TTL- / E-TTL-II flash mode
• E-TTL remote mode**

Nikon version

• i-TTL / i-TTL-BL flash mode
• i-TTL remote mode**

Olympus / Panasonic / Leica version

• Micro four thirds / four thirds TTL flash mode
• Micro four thirds / four thirds TTL remote mode**

Pentax version

• P-TTL flash mode
• P-TTL remote mode

Sony Multi Interface version

• ADI flash mode / TTL pre-flash
• ADI remote mode

**Master and slave mode

• Firmware update via integrated USB socket

• 4 x AA alkaline-magnesium or lithium batteries
• 4 × AA NiMH rechargeable batteries

• Belt pouch
• Slave stand