Product Descriptions Godox series of electrical flash lamps are ideal luminous sources for indoor photography. Specifications Model: A45S Flash output power: 45W Guide number GN (ISO 100): 28 Power supply: AC220V/50Hz Recycle time: 5--8 sec Light control distance: 15m Color temperature: 5000-6000K Connecting method: E27 screw thread lamp holder Flash sync time: 1/1000s Control: triggered by Impulse Flash Signals The green indicator shows the flash lamp is charging, and the red indicator shows the flash lamp is working. Package Includes 1* A45S slave flash bulb