The External Battery Compartment Operated LED Headlamp.

3 Lighting modes Wide-Angle Beam, 26° center beam, 165° Ambient Light Beam. The performance statement is under ANSI/NEMA FL1-2009 standard. The duration of brightness drops below 10% of the startup value.

• Illuminated surface diameter is approximately 39.3 in ( 100 cm )when emitted at 19.6 in ( 50 cm ) away from the subject.
• 3 Lighting modes of brightness: 500 lm, 250 lm, 50 lm.
  
• The external battery compartment can be easily opened or closed while wearing gloves.
• 3 x AA 1.5V batteries.