LT Electra Strobe-Torch & Spectrum SPE Strobe
Both depth-rated to 100m, they feature a "leak-free" magnetic switch and double-O-ring-sealed battery chamber. According to the maker the LED bulb technology used means that these new models offer far greater duration and are much brighter than previous versions. They are intended as safety aids for marking shotlines, exit-points and divers themselves. The EST (£50) and SPE (£43) both come with an attachment strap and the EST also has a wrist lanyard.