It really varies based on the equipment in question and the environment they exist in. At home, my headphones paired to my laptop will give me range almost all around the house. Paired to my desktop in the same room, it starts dropping just outside my office. Paired with my phone, I get somewhere in between. With my laptop and phone in an RF-noisy environment, it might only go 20 or 30 feet. With my motorcycle helmet to my phone, it won't even make it if my phone is on a case on the opposite side of the bike, but I think that's mostly because there's almost no chance of direct line of sight without my body and motorcycle in the way and there's no good reflections when out on the open road.