M Princeton Tec EOS LED Headlamp REVIEW
by Rick Dreher
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Article Summary:The Princeton Tec EOS LED headlamp is a high-performance headlamp that's suitable for technical nighttime activities. It may be the brightest LED headlamp in its size and weight class, and the lightest 1-watt LED we've tested.
In this very comprehensive review, we put the Princeton Tec EOS LED headlamp through the ringer: alkaline vs. lithium battery performance, quantitative beam pattern analysis at its high, medium, and low settings, light output vs. battery life at various controllable beam intensities at both cold and room temperatures with alkaline and lithium batteries, a detailed discussion of the data and results, benchmark comparisons to similar headlamps, and for techno-geeks, information about the Princeton Tec EOS LED headlamp's LED and current regulation strategies.
- In Brief
- Function and Fit
- Constant Light Output
- Beam Pattern
- Table: EOS Performance at 2 Feet Distance
- Battery Life
- Graph: EOS Run Times High and Medium Power
- Graph: EOS Run Times Low Power
- Table: Time Performance Summary
- Translating the Results
- Torture Testing
- Compared to...
- Technical Bits
- The LED
- Current REgulation
- Recommendations for Improvement
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