Just got it today, had it charging my 40,000mah battery bank for about 45 minutes at a not perfect angle, got 11% or over 4000 mah of charge.
If you are using this for camping to keep a battery bank and your cellphone charged (that's what I'm using it for) then it's perfect. Seems in a day I could get nearly a full 40,000 mAh charge if set up well in decent light, which is days and days of power.
Not sure if it's water proof like some of my larger panels? But it should be, it feels better and more solid than my other panels.
If you plan on running a jacker battery then get something like a X dragon 70watt panel, if you are planning on just charging pocket battery banks and your cellular phone and maybe a Nintendo switch, get this guy.