The Power 40 LED torch uses the very latest LED technology to give a stunning 40w output at 5000 - 6000degK. Powered by 4 ordinary ‘AA’ batteries it has an 8 hour burn time. No more worry about damaging expensive bulbs if the torch is knocked. The LED’s used in this torch have an average life of 50,000 hours !! Window is 4mm tempered optical glass. Weight - 0.6Kg, Size - 60mm dia. 140mm length. Buoyancy 0.25Kg negative (approx). Depth rating 200M.