The Promaster unplugged L500D combines the flexibility of an LED constant light with the form factor of a monolight. Its powerful COB (chip on board) LED light source, fitted with the ProMaster-S mount (Bowens compatible), makes it compatible with an extensive range of light modifiers & shapers. It can be powered either by the included battery for wirless freedom or by an optional AC adapter (product 2775, sold separately) for times when a long-term constant power supply is required. The LED500D's daylight balanced illumination has an incredibly high color rendition to ensure lifelike color in all of your photography and videography. The optional Unplugged LED Transmitter (product 2173, sold separately) opens up remote control options for the LED500D including multiple channels and groups at a long, wirless range (up to 300' / 100 m).