A:AnswerNot sure which is the best for Bluetooth but RF (radio frequency is not. It use RCA connecter to TV not bluetooth Then connection to head phone is wireless but not bluetooth. Search for Bluetooth headphones not RF headphones.
A:Answerinner cup is 1 1/2 inches ; total outside of ear piece is a scant 3 inches . husband is a big guy and he is happy with the fit , I am small gal and they work for me too . the overall size of this set is smaller than the last ones we had that worked well for sound but they were bulky and they felt like it too . I recommend these new ones for their size and voice clarity . Terry
A:AnswerJust bought a set of replacement earpads for another Sony headphone set from Dekoni. Check them out on Google. They are great but maybe too expensive for everyone.
A:AnswerBattery is built in. You have a warranty issue. I hope you can claim under warranty. Playback should work about 5-6 hrs. I have a pair of headphones that still work 5 hrs that are 10 years old.
