Regarding Boyancy:

 

Here:

https://www.retra-uwt.com/pages/4th-generation-retra-flash-series

 

are the values, but I don't know whether w/o batteries. As the volume doesn't change, you moght have to add the weight of the batteries.

21 minutes ago, fruehaufsteher2 said:

I don't know whether w/o batteries

Buoyancy is specified with eneloop pro batteries and mounting ball.

Nice! So bigger body does pay off 👏👍 If only video lights mfg would follow the suit … what is sleek slim body worth when it weighs a ton underwater… any insides on Lithium pack parameters and or vs NiMH re:my comment above @Oskar - Retra UWT ?

New lithium battery pack details will be announced in about 1 month at the end of June.

Hey guys I was wondering if you use some of the diffusers for wide angle and / or any other occasions? How do you like them and which ones you really use?
I dont have any and I am considering if they are worth buying as I dont want to end up with unnecessary accessories that I wont use but will take up 1/4 of my bag 🙂 

Also if anyone is interested in Retra strobes but dont want to buy new Pro Max I am selling my older but fully functional ones:

 

Firmware update now available v2.2 for ProMax

 

The new App includes firmware update 2.2 for Pro Max, Prime+ and Pure (4th Gen strobes) and a firmware update 4.2 for Pro X and Prime X (3rd Gen strobes). 

 

Both updates include the following improvements:

- Enhanced optical sensing when using inefficient fiber optic cables
- Resolution of a rare issue with an unresponsive mode dial
- Reduced chances of a false leakage alarm in high-moisture environments