It’s pretty nifty how these lights are using accelerometers to enhance their design. With the ability to tell when you’re moving coupled with knowing when it is dark the Blinksteady light automagically turns on, which means no more awkward mid-ride stretching to turn on that light under your seat or on your back. The mounting bracket is a solid ring that goes around your seatpost. While this requires you to remove and replace your seatpost to install it, their hope is that you’ll never have another stolen tail light. The final new and noteworthy feature is that depending on how you’ve flipped the light, it will either blink or shine steadily, so it has NO BUTTONS!
Check out their site: blinksteady.com