Features: 【Adjustable Brightness Flashlight(GN8 Flash Index)】The ULANZI mini camera flash and video light offers 4 adjustable brightness levels (1/1, 1/2, 1/4, 1/8) to suit various shooting scenarios, including close-up portrait shots. High-Performance Flash and Video Light】The ULANZI SL02 flash features a flash mode with a GN8 flash index at ISO100, a color temperature of 6500±300K, and a high color rendering index of 97, offering no fewer than 500 flashes at full power 【Speedlite Built-in Rechargeable Battery】The ULANZI mini flash Speedlite has a built-in 250mAh 3.7V polymer battery, camera flash supports Type-C 5V 1A charging that fully charges in 1 hour while supporting use during charging.