Mrice 2 Pack LED Running Lights for Joggers Night Runner LED Shoe Lights Safety Lights for Runners Battery Less Led running lights: Battery-less Safety light, No need of battery! It gets power from every step you take while you are running, jogging or dancing, it can transfer the kinetic energy into electricity, which is convenient and environment friendly Safety lights for runners: No worries while in rains or showers, With the High performance waterproof IPX8, it's the Best partner for wet weather. Any weather condition, any time - enjoy enhanced visibility and comfort knowing you'll be safe and secure at any time of the day. Bike safety light: Built-in 6x 15 lumens LEDs, it glows steady bright white. There is no switch, it all depends on your steps wether it'll turn on or off. ULTIMATE VERSATILE- Whether you enjoy running, jogging, walking, cycling, or having a peaceful stroll with your pets, the safety light will be practical equipments especially at dawn, dusk, night or raining days. Greatly improve your chances of being seen in the low-visibility conditions; Clip on to your belt, pockets, backpack, helmet, bike, dog's collar, dog's haulage cable, baby stroller or anywhere else of your clothing easily. There's no need to install it. Long life span:Light-weight design with high quality. Unlimited working life. We proviode 24h customer service and 100% MONEY BACK GUARANTEE: Our this safety light enjoys 12 Months Warranty and 30 Days Money Back Guarantee!