Be safe and be seen with this bright LED lights AUTHOR SPARK AL. It is a high-powered white and red LED light built in alloy case that mounts quickly and easily around most parts of the frame or rider accessories (helmet, bag pack). Giving you extra visibility and safety. Low power consumption LEDs mean you will benefit from an extra long runtime of up to 150 hours. - Light with 5lm LED is visible up to 500 m and wide 240 degrees angle. - The lights come with 3 different light modes: Constant (20 h), strobe (50 h) and pulse (150 h). - Universal silikone strap fixation for diameter 15–35mm even the unround profiles. - Powered by 2 coin cell CR2032 batteries (included).