Princeton Tec Impulse Don't let its size fool you, the tiny Impulse is jam-packed with bigh features! Powered by 2 lithium coin cells, the Ultrabright LED burns up to 36 hours and has 5 electronix switch settings, including low, medium, and high beam, and fast and slow blinking modes. With its quick release, detachable clip, hat clip option, and a range of translucent colors to choose from, you'll want one for every keychain, backpack, ball cap, and book bag in the house!
Top of Page