Bought this lite for my Jan trip to Bon. Liked its compact size, rechargeable options, and most of all the push button one hand operation on/off. After twenty dives and a couple nite dives, I was very impressed. In tropical clear water it is bright enough for a primary. Worked great during the day lighting up holes and crevasses. The batteries that came with it crapped out pretty quickly, but as advertised as far as life. The way to go IMHO is with the rechargeable Tenergy battery. Worked great. On extended dive trips diving 3+ dives a day I would recommend having two so you can swap out and recharge the other. Definitely would recommend especially if you are a diver like me who likes to use a lite often to poke around.