I bought these headphones go with my new SONY & my iPad, and they work very well with the Bluetooth connection. Walking from my bedroom to the kitchen，it still can be clearly accepted, I would say they produce a good quality clear sound and it makes a big difference not being tied to a cable connection.
Some of that depends on how good the devise is you are connected to. I use it at a Starbucks linked to my laptop. I can walk about 25/30 feet away. But of course walls and other items can cause blockage. I will say I have never felt I was disappointed by the range.
Mine are at least 50 foot but unlike most headphones were it static’s or fades in and out after 10 or 20 these actually do more then advertised. Love, love em! I just wish they came with software that included an equalizer for adjustment. Also he volume buttons don’t work correctly when paired with an Xbox, at least mine call someone instead of adjusting volume, hence software or app would help this.