Sitting down with bluetooth connection is good. Pulling the old ones off is easy, but it seems to be best to back-out the two screws that hold the speaker in the earphone part. I got these in and they are pretty big. These are super comfortable, really overhauled my headphones after the old ones started falling apart. I’ve been wearing them almost daily (with and without socks) and so far so good. Once that happens, the V3200 appears in your list of devices to pair with. My husband owned an old pair that he purchased from a sporting store. We love this look. One was the type of earpiece it had, the style of rubber earpieces isnt changeable and was leaving hot spot/pain points after wearing it for more than 30 minutes. Fitness tracking accuracy is not super accurate but a good reference.