Bluetooth speaker for working outside
I'm looking to find a decent sized bluetooth speaker that I can take outside when working. I want it to be water resistant and have a good enough battery to last most of the day, or have a 110v plugin so I can just hook it up to an extension cord. By decent size I'm meaning not one of those <4" cubes, I'd like to be able to toss my phone on it. I know that a lot of tool companies make speakers these days, but I don't want to use a battery like that unless the speaker came with one. Basically I'm looking for a rough and tumble speaker that you can haul around the yard.
Denon X4300H; Sony XBR75 900E; Definitive Technology RLS-II/DI 5.5LCR/DI 5.5R; NHT SW12