1. Easy installation: The bicycle lights can be installed in a few seconds without any tools or other devices. The lights can be mounted on bicycles, backpacks, helmets, or other parts to ensure safety. 2. Silicone alloy: A durable silicone alloy is used to create the luminous bicycle lights, allowing them to withstand various weather conditions, road use, and minor impacts. Also, they are waterproof. 3. Multiple lighting modes: Each light has three lighting modes - high - beam, low - beam, and strobe. This makes it easier to be seen in the early morning fog, at dusk, at night, and at dawn. 4. Safety design: These ultra - bright LED lights are equipped with two lithium - ion batteries, and the visible distance can reach half a mile. This helps other cyclists, drivers, and pedestrians notice you in low - light or completely dark environments. 5. Product materials: The outer shell is made of silicone, and the inner shell is made of ABS engineering plastic and a circuit board. 6. Lamp beads: The LED lamp beads are stable, durable, and malleable. They have a multi - functional fixing method, are waterproof and splash - proof, and are easy to operate. 7. Batteries: Two AG - 10 batteries are used.