This light creates a highly-visible laser lane subconsciously avoided by other road users as well as having a bright flashing light drawing maximum attention to your presence and position. Easy tool-free application. It?s the perfect accessory for keen cyclists or anyone with safety concerns or worries about the dangers of cycling at night after recent stories of car and bicycle collisions in the news. The light works for up to 36 hours and has a simple, tool-free application allowing you to be safe and secure on the roads in very little time.