Comments:

This light is simply amazing! I have one on the back of my helmet and underneath my seat. I plan on getting 2 more to attach to the 2 extensions I have underneath my rear panniers. My friends won't ride behind me when I've got these turned on, they tell me they're "blinding". Drivers compliment me on the brightness. I'd say these are perfect (at the daylight) setting for daylight, as well as rainy nights, otherwise, use the regular setting. They charge up fast and work great. I used them on a ride to the Tsawassen Ferry and back from Maple Ridge and they lasted 8.5 hours. After awhile, the yellow one goes out to save power - this all on the daylight setting. I wanted to make sure the truckers on the SFPR could see me in the bright sunlight, which turned to black clouds, rain, blinding hail, huge headwinds, etc. Can't say enough good things about these lights.

Comments:

Use it for road cycling. Great product for daytime visibility. Every car that came up behind gave me plenty of room. Also really good in dark using lower flash mode.