The Tikka + headlamp meets the need for versatility during outdoor activities: proximity lighting, lighting for travel (100 lumens, 45 meters), Boost mode (125 lumens, 45 meters) for temporary access to maximum power, red lighting and strobe mode usable at any time to signal one"s presence. Constant Lighting technology: brightness does not decrease gradually as the batteries are drained.Battery life management allows user to easily anticipate battery replacement. The headlamp automatically switches to reserve mode when the batteries are almost drained (signaled by blinking light). The red light switches on when batteries are practically empty to preserve a minimal amount of lighting.