1. Rechargeable Li-Ion Battery: The flash unit uses a rechargeable lithium-ion battery, which is more environmentally friendly and cost-effective than disposable batteries. 2. 2.4 GHz XProS Wireless Radio System: The flash unit uses a wireless radio system with a frequency of 2.4 GHz, which allows for reliable and fast transmission of flash data. The XProS system likely provides advanced features such as high-speed sync, multi-flash triggering, and remote power control. 3. Recycle Time: 0.1 – 1.7 Seconds: This refers to the time it takes for the flash to recharge after a previous burst or continuous firing. A faster recycle time means the flash can fire more quickly without needing to cool down. 4. TTL, High-Speed Sync, Rear Curtain Sync: These are all advanced flash synchronization modes that allow for greater creative control: TTL (Through The Lens): The flash fires at the exact moment the camera’s shutter opens and closes, ensuring accurate exposure. High-Speed Sync (HSS): Allows the flash to fire at shutter speeds faster than the camera’s normal sync speed (usually 1/200th of a second), enabling fast-moving subjects to be frozen in place. Rear Curtain Sync: The flash fires just before the shutter closes, creating a unique effect where the flash trails follow the moving subject. 5. Guide Number: 118′ at ISO 100: The guide number (GN) is a measure of the flash’s power output. A higher GN means the flash can cover a greater distance. In this case, the GN is 118 feet (36 meters) at ISO 100. 6. *Wireless Master/Slave TTL Functionality: The flash unit can operate as either a master or slave unit in a wireless system, allowing for complex lighting setups and remote control of multiple flashes.
