The MetalSub Cable Light KL1242 LED6350 + PR1210 + MP2500 diving light has a separate battery pack which can be mounted on the bottle or BCD. The cablelight is connected on the battery pack with a specially developed connector attached to a long cable. The battery pack connection on the jacket or bottle is a invention on its own and easy to use. Our torches are guaranteed to a maximum depth of 100 meters .