When I first opened the package and replaced the ear pads and wings with small ones. I didn't pay attention to left and right. Therefore, it was difficult for me to determine the volume. Decided to read the instructions and yes, the right one for volume up and the left one for volume down. The package includes some tips for the ears and fenders to get the right fit. The charging case is charged several times before it has to be plugged in. I've been using it in conjunction with my iPhone 6s for a couple of weeks now. It has great sound, I really like that they announce an incoming call when listening to music. I've used them while exercising, cycling, gardening and playing with my grandkids. Only the right earphone fell out twice when bending forward. Maybe I didn't put it in my ear properly. You will work independently. When I'm around people, I have to wear a hearing aid in my left ear and an earphone in my right ear. They are very comfortable, it's easy to forget I'm wearing them. So far I haven't had to charge them during my daytime use, I put them in a charging case at night and they're ready the next day. At first, I had a hard time remembering to double-tap to answer calls. They're sensitive, so a light touch is enough to make the headphones respond.
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