Answer: The choice depends mainly on where and when you ride:

• Up to 300-500 lumens: Ideal for the city, on lit bike paths, and for visibility (to be seen by others).
• 500-1000 lumens: A versatile choice for poorly lit suburban roads and forest paths.
• Over 1000 lumens: Professional lighting for night trail riding (MTB), gravel, and completely unlit routes.

Answer: Most modern ROCKBROS lights feature a built-in battery rechargeable via a USB port (often USB-C). This is an eco-friendly, cost-effective, and more convenient solution, as it eliminates the need for constant battery replacements. They also provide a stable beam of light throughout their entire runtime.

Answer: Yes. Most of our lights have a waterproof rating between IPX4 and IPX6, which means they are resistant to rain, splashes, and harsh weather conditions. However, we do not recommend submerging them in water.

Answer: Installation is quick and typically does not require any tools. The lights feature rubber mounting straps, snap-on clips, or clamps with hand-tightened screws, which allows for the light to be easily removed (e.g., when parked in the city) to protect it against theft.

Answer: These are advanced lights equipped with an accelerometer. When the sensor detects sudden braking or a deceleration in speed, the light automatically brightens to its maximum setting for a few seconds, alerting road users behind you (similar to a brake light in a car).