Maximum Guide Number of 190' (58m) at ISO 100 Zoom Flash Head with Wide Range of 24-200mm Rechargeable Li-Ion Battery Utilizing LC-E6 Battery Charger Improved Recycling Time (0.9 Sec.) and Number Of Flashes (340 Times) Active Cooling System Enabling Longer Operation and Improved Thermal Management More Versatility with Minimal Power Output Range 1/8192 Simple User Interface with New Joystick, Display and Control Layout