Beautiful Powerful Flash with GN 197ft / 60m @ISO 100 (200mm) Uses an advanced Li-Ion Polymer battery for speedy recycling and longer life Full power recycle time of fewer than 1.5 seconds Approximately 450 full-power flashes per charge Remote TTL power control with the Flashpoint R2 system built-in Complete compatibility with system features like exposure compensation, EXIF inscription, flash value lock, and High Speed Sync R2 TTL communication flashes as a Transmitter or Receiver Auto-Sensing Canon / Nikon / Sony / Panasonic / Olympus / Fujifilm / Pentax TTL Radio Receiver Modes Quick Manual to TTL and back Switch featuring TCM Control of 4 different wireless groups Trigger Mode operates on 5 Groups Brilliant 2W Modelling Lamp on command Backlit Matrix LCD Multipurpose Buttons with Digital Marking for Faster Navigation Zooming 20-200mm head with automatic or manual control High Speed Sync for shutter speeds up to 1/8000 second Front or Rear Curtain Sync