Princeton Tec 100 Lumen Push Bike Light. The PUSH Cycling Light from Princeton Tec is a self contained 100 lumen vessel of visibility with side lighting to make sure you are seen. An easy push of the oversized on/off switch allows you to quickly toggle through high, low, and flash modes. Because drivers on cell phones come from all angles, the power of the front light is augmented by independent light pipes that emit through side windows ensuring over 260º of visibility. And if you're venturing off the tarmac and onto the trail, a simple hold of the button allows the side flash to be disabled, allowing you to focus solely on the twists and turns ahead. The PUSH is mounted to your bars utilizing our race proven bracket system, so you can not only take it on and off instantly, but you can be sure of its firm and reliable grip.