Cube shaped mettalic shiny with red lights floating just above treetop level

Came into my line of sight while on work conf call on my back deck. Object was about size of 5 gallon bucket about 300 feet away. Was silent and floating just above tree tops. Was very shiny metallic headed slowly due North. Was rotating about all axis randomly. Sun was behind me clear blue skies with few clouds. Had intense red lights that were shimmering near top of its cubish shape. Was strange how intense the lights on it were even in very bright sunlight. Only visible from my viewpoint for maybe 5 seconds before passing trees. Was fumbling with phone trying to get camera app up but it passed trees before I could open app. Was on call with a fellow engineer discussing project and described to him what I was seeing. Was definitely strange experience never had witnessed anything of this sort in my 52 years.