Product DescriptionSpe-Lu LED-Cluster head lamp was designed especially for professional speleological use. It provides all you really need: LIGHT!Light performane (light output) is identical with X-Trem Beam.
Spe-Lu and X-Tream Beam are the world's brightest head lamps! All Components are extremely durable are reliable even in extreme conditions. The Ni-MH rechargeable battery provided is protected from total discharge, extreme temperatures (it can resist temperatures between -35°C bis 85°!) and short-circuit.
Mtbr Bike Lights Shootout - over 50 bike lights reviewed, photographed and measured here.