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Official manufacturer imagePetzl ACTIK CORE
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Official manufacturer imageFenix HM50R V2.0
Check price on AmazonCommon questions
Questions before you buy
What counts as an ultra-light headlamp?
There is no universal cutoff. Compare complete product weight, including the battery and strap, and decide what feels appropriate for your activity.
Is the Petzl SWIFT RL lightweight?
Petzl’s 2026 specifications list the SWIFT RL at 92 g, with a maximum output of 1200 lumens.
Are lighter headlamps less powerful?
Not necessarily, but weight and output are separate trade-offs. Check beam distance, runtime and comfort together.
What is best for running?
Choose a stable headband, accessible controls and a beam suited to the route. Try the fit with the clothing or helmet you expect to wear.









