Even the first version of this lamp inspired and accompanied me to determine 100 dives. Then there was a problem with Undidchtigkeit. I sent this (predecessor lamp) with a Two Brothers and got easily the new version (ie the lamp offered here) sent, which has accompanied me on a further 150 dives. Actually, it's just a backup lamp (because of wattage), but I need - unless otherwise provided - usually my big lamp not. This here I have always with you :)