Give them an easy way to stay visible during an evening commute with this tri-function blinking light. This handy promo features a red blinking light, a swivel clip for easy attachments, three different light settings and a push button on/off switch. It measures 2 1/2" diameter x 5" and comes complete with button cell batteries for your convenience. Add a custom imprint and create something that's perfect for safety fairs, schools, sporting goods stores and so much more!