The Marble Mountain Lights designs and manufactures high performance headlamps for caving.
The Manley 20 has two independent LED drivers coupled with precision optics. The flood optic provides uniform light throughout the field of view; you can see your feet and objects in your peripheral vision without blinding everyone near you or wasting light. The spot optic focuses a beam that illuminates objects at a distance for finding elusive leads. The mix of flood and spot illumination creates a light pattern unlike any other headlamp.