Thank you both, I don't want to spend a lot of euros on it because this strobe is one of my spares. I switched to Subtronic pro 160 Fusion a year ago which are my prefered ones, I have found that the quality of the light of the Subtronics is only surpased by the retra pro that a friend has. Now I have had some issues with the Subtros which I bought second hand and where working smootthly till a couple of months ago when I noticed one of them doesn't fire and the other one ddoesn't fire form below 25 meters depth, but this is another history of 400 more euros...
After send my subtros to the service I started to use my spares Sea&Sea. I own two D2 and one D1. One of the D2 is in the service (a man who knows how) since one year ago, I sent it to him because he repaired the same strobe quick and cheap two years ago, and now he says he is waiting for a piece because it's a different fail. So now I have for diving a D2 and a D1, the other D2 is working fine, but the D1 failed as soon as I connected to the housing, even it was working perfectly the last time I used it, after rinse it and keep it in my photo room never worked again. So now despite having 5 strobes I can only use one.
I am going on a trip to Bali in 40 days and the good new is that I will have my Subtros with me. But take pictures this summer at home, Ibiza, has been a hell with only one flash, despite I have learn a lot about how to lit with only one strobe in wide angle.