Make some noise for your next big marketing campaign when you promote on the Light Up Whistle Key Tag! This 2 1/2" x 1 1/8" key tag comes with a high-powered LED that's sure to draw attention. This item comes in 4 colors to choose from. Make the promotional product complete by imprinting a message or your organization's logo through the print option. It's a great giveaway for locksmiths, security companies and universities.