I have a pair of Denon Exercise Freaks. Battery lasts about 3 hours. Headphones are very light
You have to wear an armband though, the bluetooth signal gets sketchy when my phone is in my pocket.
I also have a pair of Samsung Gear Circles.
Battery lasts a long, long time. Phone can go in pocket but the headphones themselves are heavier.
I get 20m range on my plantronics if I leave my iphone on a table in direct sight.
I was painting our deck in December at the coast and left iphone on the top and went downstairs and could still hear music but it started to crackle a bit.