The Serfas True Series tail lights are the cream of the crop in the market. With the True approval, these lights not only meet but also surpass the expected lumen output. They offer all the great features you've come to love from Serfas lighting, making your rides safer and more enjoyable.
Using your Serfas Thunderbolt - 2 USB Light - RR 50L tail light is a breeze. First, charge it using the USB port until it's fully powered. Once charged, attach it securely to your bike. You can turn it on and off easily with the button on the light. There are different lighting modes, so you can choose the one that suits your riding conditions. When riding at night or in low - light areas, the high lumen output will make you more visible to others. As for maintenance, keep it clean by using a soft, dry cloth. Avoid exposing it to extreme heat or cold. Also, don't submerge it in water, as it's not waterproof. If you notice any issues with the charging or the light, contact Serfas customer service for help.
