Orcatorch d550 is a small and light weight tail magnetic switch diving light. It is equipped with a totally sealed magnetic controlled tail switch which offers high waterproofness and easy operation underwater. Using the latest usa cree xm-l2(u2) led, max 720 lumens output and over 4 hours 30 minutes runtime, this portable diving light offers high and low two modes and one strobe mode for different diving environment use. 144mm(length)*25.4mm(diameter)*40mm(head) 184g(excluding battery) -