LED light-equipped neckband for ensuring safety at night. - Colors: Black/Yellow - Features: With LED light - Usage: For running and cycling at night - Power: USB rechargeable - Design: Neckband style Thank you for viewing. The light cycles through 4 modes: Power → Strong light → Weak light → Flashing → Position lamp → Off. I used it for walking at night, wearing it on the head of my hat. It has been repaired with tape. There are no issues with the functionality.