LED's: 60 [Daylight]Lighting Control: VariableLight Intensity: 35,000 LuxLED Color Temperature: 5600K (White)Power Supply: 5w [100/120v AC (50/60Hz)]Focus Mount Ring Diameter: 2.91" (74mm)Mounting Diameter: 1.05" (26.9mm)Focus Mechanism: Rack & Pinion w/ Tension ControlFocusing Distance: 1.96" (50mm) - In Vertical DirectionWeight: 2.8 lbs. (1.27 Kg)Accepted Bodies: SSZ, SPZ, DSZ and NSW Series Microscopes