I picked up this light because the price was right and the lumens was good. Got it home the night before a dive and the battery cartridge was missing springs. Had to "rig" it with foil to be able to go on dive next day. Took it back to store and they gave me a new one. That one worked fine...so i thought. Worked really well on cavern dive and got home that night and put it on my table. Turned out the house lights and seen that it was on, but dim! i thought i left it on and the batteries were now dead..NOPE! The LED was getting power even though the switch wasn’t on. Took the batteries out and called the manufacture. Really nice guy on the phone listened to what i said and sent me another light out in the mail, no questions asked. Told me to keep the old one as a back-up. Said he has had a few calls like this before. Hopefully 3rd time is a charm! Besides those issues...the light is really solid and bright for the price.