Using your Ontrack Glare lights is super easy. First, insert the provided batteries into the front and rear lights. The front light has two functions, so you can switch between them according to your needs. The rear light has six functions, and you can cycle through them to find the best one for your situation. When you're out on the road, make sure the lights are securely attached to your vehicle or equipment. As for maintenance, keep the lights dry, especially the rear one as it's water - resistant but not completely waterproof. If the battery life starts to decrease, simply replace the batteries with new ones. That's all there is to it, and you'll always have great safety and visibility on the roads.