GREEN GRADE PLUS+
Thermalution® Green Grade Plus it's fixable to swap halfway between small and big, don't need to worry if one battery is danger. Upper back core heating is sufficient to provide enough warmth if you dive within 30m.
Heating time too short!
Try latest model Green Grade Plus. It lasts up to 8 hours time with 2 large batteries.
One battery can operate it.
It is suitable for people need to dive in extreme weather conditions and its minimalistic design will keep you warm for up to 30 meters deep in the water.