External light for survival crafts. At half the size of the previous model this is slim in design and very cost effective. The product is in two parts (battery and lamp) and provides more than 4.3cd in all directions for a minimum of 12 hours. There is an option for a specially-designed backing plate, which makes it easy to change batteries after five years shelf life. This backing plate can also be used for Internal light type Rescue Dan R.INT2.