Features: 1. Power:2.4W. 2. Input:AC6V,fits for most dynamo bike. 3. Brightness:40 lux 4. Material:Aluminum,high quality bicycle dynamo light. 5. Cable length:about 62cm for input,and about 5-10cm for rear light connector. 6. IPX5 waterproof,heavy rain waterproof 7.With button to turn on and off the bicycle dynamo light Advantages: 1.High power 40 lux,bright enough for city and road cycling 2.With parking light/steady light function,ensure safety when you are waiting for traffic light . 3.With connector for rear light,can connect your dynamo rear light easy. Package include: 1 * bicycle light How to install: 1.Use screw to install the light mount on the dynamo bicycle 2.Use the cable connect with the dynamo bicycle hub output wire Notice: 1.The dynamo output voltage should be AC6V,or the light can't work or will damage the bicycle dynamo light. 2.The parking light will work about 20% brightness when stop cycling,and the parking light will last about  3 minutes after cycling over 5 minutes. 3.The connector for rear light need use heat shrinkable tube to protect well if you don't use it, or maybe influence the headlight because of the Short circuit.