Black Diamond Astro 300-R Headlamp Graphite One Size. Specifications for Black Diamond Astro 300-R Headlamp: Manufacturer: Black Diamond Light Output: 300 lumens Battery Type: Lithium Ion Bulb Type: LED Weight: 75 g Condition: New Features of Black Diamond Astro 300-R Headlamp Max Distance: (High) 55 m (Medium) 35 m (Low) 8 m. Micro-USB charge port. Recycled elastic headband featuring comfortable next to skin Repreve fiber construction Settings include full strength dimming and strobe. Brightness Memory allows you to turn the headlamp on and off at last used brightness level without reverting to max brightness IPX 4 Stormproof: withstands rain and sleet from any angle Digital lock mode feature safeguards against accidental use when stored in a pack or pocket Package Contents: Black Diamond Astro 300-R Headlamp Black Diamond BD6206780004ALL1: Astro 300-R Headlamp Graphite One Size