The Apex is the pinnacle of waterproof headlamp design, with four light levels, safety flash mode and impact resistant design. It combines a 3 watt maxbright LED with four ultrabright LEDs for constant brightness on all modes. Ideal for both long and short distances and it has 275 lumens of output. Easy dual switch system allows you to independently control long range lighting, the wide angle, or close range lighting. Multiple settings give the flexibility to adjust brightness or beam settings to conserve battery power depending on your needs. Heatsink technology allows the LEDs to burn brighter and longer. Compatible with four AA alkaline, Lithium or NiMH rechargeable batteries and has a battery power meter batteries not included. Burn Times: Maxbright High 72 hrs. Maxbright Low 96 hrs. Ultrabright High 100 hrs. Ultrabright Low 150 hrs. Wt. 9.84 oz.