This bike light combo keeps you safe with a reliable dynamo lighting system that ensures visibility from a distance. The headlight and rear light are powered by a dynamo, eliminating the need for batteries. The set includes all necessary wiring for easy installation. The lights effectively catch drivers' attention, helping you see the road and making you visible to other road users. The rear light can be mounted on the bike or rear rack. Suitable for all bicycle types. The lights are powered by a dynamo that attaches to your bicycle wheel, providing continuous power without batteries. Installation: 1. Install the lamp holder on the bike, then secure the lamp onto the holder. 2. Mount the dynamo and motor wheel. 3. Align the dynamo position so the roller makes contact with the tire. 4. Fix the dynamo wheel to the front fork and securely fasten the wire to the fork. 5. Route the wires from the taillight, then install the lights and dynamo. Both the lights and dynamo have connection points—insert the light into the holder while guiding the wire. (The LED lamp is directly attached to the copper wire.) 6. Press the lamp into position so the generator roller contacts the tire. As the wheel turns, friction drives the generator to produce electricity. If the light does not illuminate, check the following: 1. Is the light cable properly connected? 2. Is the switch on the dynamo light in the correct position? Adjust as needed. 3. Is the dynamo roller making contact with the tire? 4. Is the dynamo bracket corroded or damaged? 5. Is the front fork made of metal? 6. Are the light wires correctly installed? Material: Aluminum Alloy + Plastic Dynamo: 6V 3W Color: Silver + Black Package includes: 1 set x Bicycle Dynamo Lights (Other accessories shown in images are not included) Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement allows an error of +/- 1-3 cm.