The Supernova Airstream II Ultra-Bright Waterproof LED Bike Headlight is a game-changer for cyclists. When it shines, it truly stands out, ensuring your safety on the road. It's fully waterproof, so you can use it in any weather conditions. With a long - lasting battery, you'll never be left in the dark. Its saltwater - proof aluminum housing makes it almost indestructible and guarantees a long lifespan. This headlight is one of the brightest StVZO approved LED bike lights globally. It not only resists water but also endures the toughest daily stresses. The fourth light level offers 14 hours of light, lasting through the whole night. **Technical specifications:** - 260 lm - Burn time: 2.5 - 14 h (4 dim modes) - Lens: Terraflux 2 - Comes with USB charging cable - Dimensions (L x W x H): 108 x 41 x 49 mm - Material: aluminium - Weight: 165 g - Long - life Li - Ion battery 9.25 W/h, replaceable by Supernova - Power supply for 110 - 240 V with plug (US, UK, AUS plug on request) - 80% quick charge in 4 hours, 100% in 6 hours. USB - chargeable with KA613 - Universal handlebar holder for 25.4 - 31.8 mm and stems - 3 year guarantee

Using the Supernova Airstream II headlight is easy. First, use the universal handlebar holder to attach it to your bike's handlebar or stem (it fits 25.4 - 31.8 mm ones). Then, charge it using the included USB cable. You can plug it into a 110 - 240 V power supply, and if you need a specific plug like US, UK, or AUS, just request it. For a quick charge, you'll get 80% in 4 hours and 100% in 6 hours. Once charged, you can choose from 4 dim modes. The fourth mode gives you 14 hours of light, great for long rides at night. When it comes to maintenance, since it's waterproof, you can clean it with water if it gets dirty. But don't submerge it for too long. The saltwater - proof aluminum housing means it can handle tough conditions, but try to avoid scratching it. If the battery runs out and needs replacement, Supernova can take care of that for you. And remember, this headlight comes with a 3 - year guarantee, so you can use it with peace of mind.