1. A set of 5 high-performance CREE XM - L T6 LED Bulbs deliver 5000 lumens to give you the brightest illumination up to 100・000 hours2. 6 Lighting modes are available - Top Middle LED On・ Top 2 Outer LEDs On・ Top 3 LEDs On・ Bottom 2 LEDs On・ 5 LEDs On・ 5 LEDs Strobe. The 6 light modes ensure you get the exact level of brightness you need for any use through single button control3. This flashlight is powered by 2 Pieces of 3.7V 2200mAh 18650 Li-ion batteries・ It will fully charge from any USB port in just 3 hours and will provide up to 6 - 8 hours of constant light on a single charge4.90 Degree adjustable beam angle support you to light up anywhere you need. Straps are comfortable to wear and easy to adjust・ and the battery compartment that is covered with rubber seal・ as well as front plastic plate holding the lamp・ do not cause any discomfort5.This head light is made of aluminum alloy and rubber material・ waterproof and durable. Best for indoor and outdoor sports activities・ like climbing・ camping・ hiking・ running・ walking・ cycling・ hunting・ fishing・ mining・ caving・ etc