Princeton Tec Impulse Keychain LED Light

Princeton Tec Impulse Keychain LED Light - Impulse is the ultimate personal multi-task light available and it is UL Class 1, Division 2 approved! Dont let its size fool you the tiny Impulse is jam-packed with big features! Powered by 2 lithium coin cells, the Ultrabright LED burns up to 36 hours and has 5 electronic switch settings, including low, medium and high beam, and fast and slow blinking modes