Fenix E01 V2.0 stands out as the lightest option for weight, with about a 67% gap from the closest alternative. Acebeam UC15 stands out as the highest output option for max lumens, with about a 900% gap from the closest alternative. Acebeam UC15 stands out as the longest runtime option for max runtime, with about a 84% gap from the closest alternative.
Decision Signals
What stands out
Lightest
Fenix E01 V2.0 stands out as the lightest option for weight, with about a 67% gap from the closest alternative.
Heaviest
Acebeam UC15 stands out as the heaviest option for weight, with about a 200% gap from the closest alternative.
Lowest output
Fenix E01 V2.0 stands out as the lowest output option for max lumens, with about a 90% gap from the closest alternative.
Highest output
Acebeam UC15 stands out as the highest output option for max lumens, with about a 900% gap from the closest alternative.
Shortest runtime
Fenix E01 V2.0 stands out as the shortest runtime option for max runtime, with about a 46% gap from the closest alternative.
Longest runtime
Acebeam UC15 stands out as the longest runtime option for max runtime, with about a 84% gap from the closest alternative.
Shortest
Acebeam UC15 stands out as the shortest option for length, with about a 1% gap from the closest alternative.
Longest
Fenix E01 V2.0 stands out as the longest option for length, with about a 1% gap from the closest alternative.
Specification Profile
Relative dimensions at a glance
Each axis is normalized against the largest raw value among the products in this comparison. Farther outward means a larger value, not necessarily a better result. Axes with an unverified value are omitted.
✓High output in a compact keychain format✓Multiple LEDs including UV and red for versatile use✓Solid build quality with aircraft grade aluminum✓Intuitive single-button user interface for white modes✓Low-voltage protection for NiMH and Li-ion batteries✓Reliable performance and good driver efficiency
✓Compact, lightweight, and easy to carry on keychain✓Reliable and consistent output with simple twist operation✓Long runtime especially on low mode✓Good build quality with CNC machined metal body and hard-anodized finish✓IP68 waterproof and durable to 1 meter drop
Common complaints
⚠Silicon switch wears out quickly⚠Access to secondary emitters (red and UV) is slow and complicated⚠Lowest white mode is relatively bright; no true moonlight for dark adaptation⚠Not waterproof beyond IP54 splash resistance⚠Thermal design may limit higher mode performance⚠Single button operation limits ease of switching between secondary LEDs
⚠Output is modest at 100 lumens max, not suitable for high-demand tasks⚠No traditional switch, requires twisting the head to operate which some may find unusual