Beam Comparison - Headlamp


Battery Life vs. Beam Distance - the above graph shows how beam distance at the brightest setting degrades as battery life runs down. We use the ANSI FL-1 battery run-time spec, which says run-time for the high mode is finished when brightness degrades 90% from its initial value. The ANSI standard is more stringent than what headlamp manufacturers use. They consider high mode run-time still OK so long as there's enough battery to produce light as bright as a candle placed 2 meters away (0.25 lux). We think the manufacturer's approach is deceptive and misleads consumers to believe the high output mode produces a long-distance beam much longer than it actually does.

                                       Petzl NAO: we measured the maximum beam distance as 113 meters and the ANSI battery run time for the high setting as 2 hours.
                                       Black Diamond Icon: we measured the maximum beam distance as 82 meters and the ANSI battery run time for the high setting as 9.4 hours.

Side-by-Side Comparison


Rank #2 #1
Product
Petzl NAO
Petzl NAO
Black Diamond Icon
Awards     
Price $142.95 at Amazon$90.83 at Amazon
Compare at 2 sellers
Overall Score 
100
0
65
100
0
68
Star Rating
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Pros Perfect 10s for trail finding and close proximity, cool technology, charge off any usb plugBright, wide spotlight, clear/smooth optics, long battery life, robust design
Cons Abysmal battery life, reactive lighting can be as annoying as usefulHeavy, bulky, and expensive
Bottom Line A high scorer in trail finding and close proximity, this model slips in the battery life department.Very bright with a wide beam, this model is bulky and heavy with an even heavier price tag.
Weighted Metrics Petzl NAO Black Diamond Icon
Trail Finding - 20%
10
0
10
10
0
9
Close Proximity - 15%
10
0
5
10
0
6
Battery Life - 15%
10
0
4
10
0
8
Brightness - 25%
10
0
9
10
0
7
Weight - 15%
10
0
3
10
0
2
Ease Of Use - 10%
10
0
4
10
0
8
Product Specs Petzl NAO Black Diamond Icon
Measured Max Beam Distance 113 m 82 m
Claimed Distance 135 m 100 m
Measured High Mode Run-time (ANSI) 2 hrs 9.4 hrs
Claimed High Mode Run-time 8 hrs 75 hrs
Claimed Low Mode Run-time 12.5 hrs 175 hrs
Weight 190 g, 6.7 oz 232 g, 8.2 oz
Battery Type Proprietary Rechargeable or 2 AAA 4 AA
Water Resistance IPX 4 (splash proof) IPX 7 (waterproof to 1m)
Manuf Claimed Lumens 575 lumens 320 lumens
Beam Type Flood/Spot Flood/Spot
Red Light no Yes
On/Off Switch Lock Yes Yes