This dimmable head lamp of Petzl (serie Actic) is not rechargeable (Alkaline) is a good choice, equipped with a powerfull lamp and cheap on batteries. When dimmed, lumen is lower: 6Lm i.o. 300Lm. 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.