SL-20XP™(8 watt) Battery Nickel-cadmium 6 Volt, 1.8 amp hour, sub-C; rechargeable up to 1,000 times Lamp 8 watt, hard glass halogen pre-focused in spun reflector Material Lightweight super tough polymer with non-slip, non-absorbent closed cell foam comfort grip; unbreakable polycarbonate lens.