Emergency light for use with inflatable life vest. Consists of battery pack encased in blue plastic . From this rectangular structure is a two strand wire that is secured at the other end in a clear plastic dome that houses the bulb. Along the battery pack is printed on a white sticker, DEPT. OF TRANSPORT APPR. NO. 80-1 EN LEVEZ LES BOUCHONS ET TIRANT SUR L'ANNEAU ET IMMERGEZ DANS L'EAU.