Sennheiser On-Ear 900MHz Wireless RF Headphones

Update: 4-26-18- I just threw them out into the garbage. I hadn't used them in a long time - see the update at the bottom to find out why. Then I started thinking, "They can't really be that bad, can they?" So I charged them back up and tried them out. I tried to take a little nap after work and enjoy some relaxing music. The music kept coming across all static and interference. I tried all the settings, and fussed around, trying to just get clear music. Alas, I couldn't get rid of the static. I tried placing the antenna close to the headphones. Still static. My relaxing nap time turned into frustration and distress. Into the garbage. I wish I'd never bought these things. I really love these headphones! I got a Miccus Mini-jack RX: Bluetooth Music Receiver to send music to some Pyle speakers I put in my kitchen, so I'd have music in my kitchen. Unfortunately, they don't work well, even when I've got them strung out on walls and facing each other directly across my little studio apartment. I wrote a very unsatisfactory review of them. Plus, if I pair them with my computer speakers, there's a severe lag between the music in my computer speakers, and the ones in my kitchen. The Pyle speakers are pretty good, though. I'd been checking out wireless headphone options as a work-around. I settled on the Sennheiser RS 120 based on reviews, and the Sennheiser brand. I've got to say, I love these headphones; they've become my new best friend. I have a small San Francisco studio apartment, but there are separate kitchen, bedroom, and bathroom. I can go anywhere in my apartment, and the music is smooth and static-free. I tried going down three floors to the recycling area behind the building, and they kept the quality of sound almost all the way; then started with a bit of static. But I was still receiving music. The sound quality is very good. Bass is there, and the quality of the sound is smooth and silky. I can wear them for a long time and don't get music or headphone fatigue. I'll wear them to bed and listen to soothing music 'till I fall asleep. Two things I had to learn: I thought the ear cups themselves needed to be close to the transmitter to charge the battery. I was fiddling with it 'till I got it just right, and the charging light came on. But, actually (my son had to point this out) there are two metal strips in the headphone band. The charging happens when these strips come in contact with the bracket that the headphones hang on. Another thing: in the right headphone, there's a dial for volume, and a dial for reception. Sometimes when I first start it up, the reception needs to be adjusted. All I'll get is scratchy, static interference tones. So I'll dial in the reception wheel 'till I get proper reception. BUT- I started getting little static tones behind the music. No amount of fiddling with the static dial would help. I went onto the Sennheiser website, and found out that there's a tiny, barely visible white switch at the front-center base of the transmitter. This switch has three different settings. I switched the setting, and re-dialed the earcup reception dial, and the little bit of static went away. Also- there's a little on/off switch on the left earcup. I'm giving all this information here, because the enclosed instructions really aren't up to the task. So, I've only had 'em for a few days, but I put these on first thing in the morning, and first thing when I get home from work. They work great for me, and I love 'em. Great sound, lightweight, comfortable, and excellent reception. I'm really, really glad I bought these headphones, and I've been showing them to other people. UPDATE - 6-30-2017- TERRIBLE CHARGING SYSTEM; EAR-BUSTING NOISE IF THE SOUND SOURCE QUITS. I'm not really using these too much anymore. Reason one is: the charging dock. There are a couple of narrow metal strips in the headphone band; they need to contact the charging dock exactly right, or the headphones don't charge. I literally just spent 5 minutes trying to fit and fiddle with these headphones so that they engaged the charging dock right. Just because I've finally got the precise placement arranged now doesn't mean they'll stay in place and charge. Too many times I've gone to use them, and the charge was low and they quit on me. I don't need the frustration of endlessly fiddling with these things just to charge 'em. The second reason I don't use them much anymore: As long as the music is playing, they sound good. As soon as the music is over and the source quits broadcasting, a huge roar of static immediately assaults my ears, and I have to tear the headphones off my head before my hearing gets damaged. Why use a product that's painful to my eardrums? Unfortunately, these two defects make these headphones NOT a good buy. If they charged well and didn't assault my ears with a painful roar of static, I'd recommend them. Why buy a product that hurts me and won't charge?