Specifically designed for running, the Sprinter 500 headlamp is equally comfortable during early morning urban outings as it is on nighttime mountain runs. Lightweight and perfectly balanced, it offers a maximum intensity of 500 lumens, making it perfect for runners on the move. Thoughtfully designed, the unique front lens features a smooth beam that minimizes hot spots and thus improves transitions on the trail. The intuitive PowerTap™ interface is easily triggered for quick on-the-fly brightness adjustment and variable dimming. All for perfect brightness adjustment according to conditions. Well-equipped, the Sprinter 500 features a lightweight and breathable headband with a removable top strap. Reflective logos and a red rear flasher ensure you are visible in all conditions. In terms of battery, this Black Diamond headlamp is Dual-Free compatible and can be powered by the rechargeable BD 1800 lithium-ion battery (included) or 3 AAA batteries. In summary, the Sprinter 500 is the headlamp for those who start early in the morning and those who continue late into the evening. Rechargeable headlamp with 500 lumens Two power options: Maximum flexibility to use the included BD 1800 rechargeable lithium-ion battery or standard AAA alkaline batteries Micro-USB port included on the rear battery compartment for easy recharging Red rear strobe light with on/off programmability for increased visibility 3 LED indicator and six settings PowerTap™ technology for instant transition from maximum power to a dimmed setting Variable dimming and strobe mode Lock mode ensures it does not turn on unintentionally in your bag or pocket Perforated elastic headband with removable top strap IPX4: Weather-resistant - tested to withstand rain and sleet from any angle. Maximum distance: Minimum intensity: 8 m Maximum intensity: 52 m Maximum intensity: 500 lumens Weight: 105 g Black Diamond Sprinter 500 - Headlamp