The Petzl Tikka hybrid: unique because of adjustable intensity and beam, hybrid means that the lamp can run both on Alkaline as on li-ion Petzl Core. Petzl manufactures very qualitative, innovative headlamps. Wearing a headlamp on your head is very practical and common today. 30 years ago (Petlz invention) is was not. Since then, Petzls have become increasingly light, compact, durable and powerful.