Such a small, but significant, cycling safety feature can become a great inconvenience in many scenarios. The makers of the Blink Steady Bike Light have attempted to eliminate many of these annoyances with their design, particularly related to theft and longevity.
Firstly, the Brooklyn-made bicycle accessory is screwed around the seat post of your two-wheeler, only removable with an Allen key wrench and by pulling the seat out of the frame. This secure installation deters thieves and means you don't have to be constantly pocketing and reattaching it before use.
For added practicality and energy efficiency, the Blink Steady Bike Light uses an accelerometer and a light sensor to automatically switch on only when the bike is in motion and it's sufficiently dark outside. With two AAA batteries it can last for 200 hours before its pulsing or continuous illumination burns out.