Princeton Tec Push Bike Light The Princeton Tec Push Bike Light is the vessel of visibility with an easy push of the oversized on/off switch which you can quickly toggle through high, low flash mode. The high power LED emits 100 Lumens of brightness. Its side view windows create more than 260 visibility. There is a large push button switch to use multiple modes. The light also features quick release tab for easy on/off the bike. The bracket mounts quickly to standard and oversize bars. It is very firm and having a reliable grip. The light has 63 hours of burn time and includes 3 AAA Alkaline batteries for long life. So go out safe and tension free with the Princeton Tec Push Bike Light.