Knog Plus is a very bright, 100% waterproof and versatile USB charging light for bicycles. Clip it onto your handlebars or fork, or use the integrated clip to attach it to your jersey pocket (or backpack strap, bike bag) and you're ready to go. If you're more of a runner than a cyclist, just tuck the flasher behind your shirt, shorts, socks or headband using the smart integrated clip and you'll have enough light for nighttime illumination. Weight 12g Front 40 lumens / Rear 20 lumens Lifetime 2/40 hours 5 USB modes Magnetic clamping Universal clamping on bike, helmet, dog collar, t-shirt, stroller, backpack strap