The MC-E is the brightest Cree LED emitter on the market making this the brightest P60 drop-in module on the market.  It produces an awesome amount of light and has TONS of spill making it a great flood light with enough spot to reach way out there.

Manufacturer's Specs:

• Emitter: Cree MC-E
• Emitter BIN: K-WC
• Emitter Color: White (WC)
• Battery Configurations:    1 x 18650, or 1 x 3.0V/3.6V CR123A battery
• Voltage Input:    2.7V~4.2V
• Modes:    3
• Mode Arrangement:   
  
• Hi (2800mA, 410LM)
  
• Lo (1000mA, 100LM)
  
• Fast Strobe (1500mA, 200LM)
• Brightness: 410 lumens (manufacturer rated)
• Circuitry: 2800mA Current Output, Digitally Regulated Driver Circuitry
• Reflector: Aluminum Textured/OP Reflector
• Bezel diameter: 26.5mm
• Base diameter: 21.5mm
• Height with heat sink: 27.5mm
• Height without heat sink: 22.0mm
• Aluminum alloy textured/OP reflector with proper copper heat sink.