As explained to your excellent service representative, Andrew, my appreciation of the SLFX was okay.
Definitely a fine product. Very durable and works as intended! Good job on that release!
The only fault I have is the placement of the power button. Although my board is too low for an SLFX, it did fit. Because the button was designed to be on the top of the light, any bump on the pavement will take the rubber button right off.
In my case, it was my fault to buy the SLFX for my very low to the ground board. That said, any board can be victim to a bad bump. The button should be designed to be on the side, to avoid losing it.
In my case, I lost the button on 2 different occasions in my first 3 rides. The third time, I lost it permanently.
Other than that, great product! Make sure you evaluate your board's height beforehand! ;)