Up to 29,300+ Lux @ 3 Meters with the LS 600d Pro (15° Spot)
15º-45° Spot-Flood Variable Beam Angle
10" (250mm) Glass Fresnel Lens Increases Output Up to 10x
Dual Lens Optical System Optimizes Beam Angle For Maximum Light Output
Compatible with Bowens Mount LED Lights (LS 600d Pro, 300d II, 300x, 120d II, etc.)
Compatible with F10 Barn Doors With Die-Cast Metal Front Ring & Accessory Slot
Seamless, Ergonomic Helicoid Focusing Mechanism
Heat-Resistant Design to Withstand High-Wattage COB Lights
 
Source: Aputure
https://aputure.com/EN-US/products/f10-fresnel?Title=Default+Title