PRECISE TTL EXPOSURE - Ensures optimal lighting with Fujifilm cameras, automatically adjusting flash output for perfectly exposed images in various shooting conditions. RAPID RECYCLE TIME - Minimizes downtime with a ~3 second recycle time at full power, allowing you to capture more shots without missing crucial moments. ULTRA-COMPACT DESIGN - Offers unparalleled portability with dimensions of 57x40x22mm and a weight of only 34g, making it easy to carry for on-the-go photography. RELIABLE POWER SOURCE - Features a built-in 470mAh Li-ion battery, providing a dependable power supply for extended shooting sessions without needing external packs.