OGHagen This is clearly described as a 300W BUCK converter so do you think it's a 750W BOOST converter? Hmm? Because it is actually. I recommend you buy two.

OGHagen Not waterproof

OGHagen You are lucky if you get it to record anything at all. You will also be disappointed by the result.

OGHagen The colors in the display.

OGHagen You need one volt-ammeter for each of the 3.3V, 5V and 12V though.

OGHagen No. It is absolutely not waterproof.

OGHagen Use a power bank with a USB port to power it

OGHagen The 25? May be the week number. We have many kinds of keeping track of time. Hours, minutes, years, months, day of the month, day of the week. Week number is yet another one and it is probably the less used. Week number is often used in planning for activities. Common in the field of construction. Today is Saturday July 31 2021 week 30. For me and where I live that is. The same is true in the US. Tomorrow will still be week 30. However in the US it will be week 31. That is because we count Monday as the first day of the week. In the US it is Sundays. In Islamic countries it is Saturdays. In Saudi Arabia it is now week 32. Yep. This is because what counts as week 1 is also different within this systems. January 1, January 4 or Thursday.