ASTIKAYA 300-500M The range of headlights,provide enough light for better outdoor activities. Ample light ensures the safety of outdoor activities, and maintains a good view even at nightWhen you're facing a challenges and response time is critical, you need to be able to rely on the gear you carry with you. Swift response in outdoor situations often determines the fine line between life and death. Our powerful headlamp employs T6 LED (Theoretical value), that you can depend on in all situationsThere is a red taillight design behind the battery power pack, and the taillights will work when you use headlights. Headlights + taillights better indicate your presence, ensuring that people and animals behind you can see your presence, attract attention, and avoid in time.3 levels of light brightness, High, Low&Strobe, you can change the brightness in different outdoor environments. Strobe is very needed in emergency situations. The ON/OFF button which is green is on the side. Press one time, it is at high mode; press two times, it is at low mode; press three times, it is rapidly flashing. Please put two 18650 batteries into this headlamp when you charge first time.