Attach your keys and carry our super bright 4 1/2" LED Blue Keychain wherever you go! This blue light-up key tag illuminates in 2 modes: flashing & steady on. Two CR1616 batteries are included, installed,and replaceable. Batteries are housed in the black battery base. Perfect for party favors and corporate give aways. Imprinting available. Please order in increments of 1 keychain.