Black, White, Translucent Purple, Translucent Red - Call attention to your brand with this Light 'N Whistle Key Tag! Simply press a button to activate the red LED. Great for personal safety, this keychain also features a whistle for added safety when out at night. Two button cell batteries are included and inserted. Offered in several translucent color choices, customize this 2.5" x 1" safety keylight with your company logo and hand them out for your next marketing campaign! Lifetime guaranteed. This supplier is QCA certified.