Beal 5mm Accessory Cord 201

Million Mile Battery-Free LED Safety Running Light. Million Mile Light is an ultra bright, battery-free safety light for runners that's powered by motion and engineered to never give up. The Million Mile Light creates a pulse of light with every stride, no matter how you run, keeping you visible and safe in low-light situations. How's it different from other lights? Simple. No batteries required. That's right, the movement from your running powersthe LED lights so you don't have to worry about changing batteries or losing power in the dark. Also, the water resistant casing will protect it from the elements runners endure and it only weighs 1.5 ounces. Let there be light! Materials: ABS, Copper, Neodymium Dimensions: 1"L x 1.125"W x 2.5"H Weight: 0.09 lbs