

🎧 Stay aware, stay active, stay ahead with bone conduction brilliance!
The GZCRDZ BC900 wired bone conduction headphones use innovative bone conduction technology to transmit sound through your cheekbones, protecting your eardrums while keeping you aware of your surroundings. Designed for sports enthusiasts, they feature a sweat- and water-resistant build, a noise-cancelling microphone for clear calls, and a universal 3.5mm audio jack for hassle-free wired connectivity without the need for charging.
| ASIN | B07CB7VWT8 |
| Age Range (Description) | Adult |
| Audio Driver Type | Bone Conduction Driver |
| Best Sellers Rank | #48,702 in Electronics ( See Top 100 in Electronics ) #4,517 in Headphones & Earbuds |
| Cable Feature | Retractable |
| Compatible Devices | Smartphones, MP3 Players, and some Laptops |
| Connectivity Technology | Wired |
| Control Method | App |
| Control Type | Call Control |
| Customer Package Type | FFP |
| Customer Reviews | 3.2 3.2 out of 5 stars (209) |
| Date First Available | March 3, 2017 |
| Earpiece Shape | Over-Ear |
| Global Trade Identification Number | 06959913502528 |
| Hardware Interface | 3.5mm Audio |
| Headphones Jack | 3.5 mm Jack |
| Included Components | Headphones |
| Input Device Interface | audio jack |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.705 ounces |
| Item model number | C630 |
| Manufacturer | China |
| Material | Plastic |
| Model Name | BC900 |
| Noise Control Features | active_noise_cancellation |
| Number of Items | 1 |
| Package Dimensions | 6.77 x 4.92 x 2.05 inches |
| Recommended Uses For Product | Calling, Gaming, Running |
| Series Number | 900 |
| Special Feature | Microphone Included, USB connectivity, Universal, sports-and-exercise |
| Specific Uses For Product | Sports and Exercise |
| Style | Sporty |
| Supports Bluetooth Technology | No |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
A**X
Work well if you use them correctly.
So I was a little conflicted based on the reviews but ended up ordering these and they work really well for my use case! There's a few caveats though I think trip a lot of people up judging based on the other reviews. First, these require a certain amount of output power from whatever they are connected to in order to work and they are not amplified internally (not getting into technical details here just at a high level). Some devices I have can drive them adequately including my cellphone but others can't including an old MP3 player I happened to try. On the devices that do work I find I have to turn the volume up higher than usual to get clear audio. Second, you need to place them in a certain location on the side of your head to really get the full effect. If they are slightly off they will work but the sound will be very muffled or low volume. If they are way off they don't work at all for me. Luckily the headband places them in about the perfect place on my head but sometimes when I wear a hat over them I need to move them around a bit to get them to sit correctly. Third, even when they work perfectly they are not going to sound great. The point of these is that they are wired, so you're not dependent on bluetooth working correctly in your environment, and they don't need their own power, so you don't have to charge them. If these are not things you want they you'd likely be much better off with a pair of bluetooth bone conduction headphones. Personally these work really well for my use case and I'm going to buy another pair to keep as a spare in case the first ever breaks. I never use the microphone on them so I can't comment on how well that works.
M**R
Junk
As other reviewers said, they are very low volume. If you use them in a quiet place with foam earplugs in, with an amplifier, you’ll be able to hear. Even so, the sound quality will be poor. I have other bone conduction headphones which I’m very happy with. I wanted a wired set and this was the most popular, but they are cheap junk. I would have been willing to pay 5X more for something that actually works, but no such option exists. These are trash.
A**D
extremely quiet but works with my computer
My old over-ear headphones completely cover my ears, hurt after several hours and get ear wax build up (after days of passing the time recovering from corrective surgery). I needed open ear to let my ears breath. Bone conduction sounds perfect (unintentional pun). And, these were the least expensive of the very limited (corded, bone conduction 3.5mm headphone/earphone) choices. But, they are not supposed to work with computers, because of the microphone? I do not need the microphone.. I hoped and waited for them to arrive. Plugged them in.. no sound. Wait a minute! Turn the volume ALL THE WAY UP! Ah, conversational volume. LOL Good enough? Maybe.. For the price? Got to love it! Remember, the round part goes on your cheek bones directly in front of your ears, not on your ears. They do squeeze a little but that is necessary, to push against the bone for bone conduction. And, they are simple (durability and inexpensive.)
S**.
Good buy. Good quality
Great fit and lightweight
F**G
Does not sound good at all. Bluetooth headsets are way better
I have recently started using bone conduction technology, and overall I am pleased with the technology. Yes, the sound quality is not as good as a set of regular headphones or headsets, but for the most part it's passable; I can hear podcasts, I can hear calls, I can hear music, I can hear video game sound. These however, are horrible. Yes, you can hear podcasts, you can hear calls, you can hear music, and you can hear video game sound, but the quality of the sound is unacceptable to me. I absolutely do not recommend these unless you really really need wired bone conduction headphones, since they are the only ones that are available (at the time of this writing).
B**Y
Good, but quiet
Overall, these are pretty decent headphones. I'm using them with a small pocket radio and foam ear plugs. I need to wear hearing protection at work and these work quite nicely when I'm wearing my PPE; they actually sound better with ear plugs in than without. As other people have pointed out, they are fairly quiet and don't have the best sound quality, but they're also passively driven (non-amplified) and relatively inexpensive. The build quality is pretty good too, I don't feel like they're going to break if I sneeze too hard like many other products I've encountered. Edit: about a month later the wires have started to fail at the 3.5 jack. Dunno if it's poorly made or if I'm just that hard on em.
L**H
Not Worth The Money
The product works, but, the volume and quality of sound is insufficient to be of any practical use. Save your money and shop for a product that works.
S**N
Actually pretty good!
I didn't know what to expect, but once you get used to the sound (it is a bit different than traditional earbuds), they work quite well. I am on my cellphone a good portion of the day for work. Downside: A little tight on the head, but kinda has to be in order to make contiguous contact with the area over your hear Upside: Traditional earbuds are way too loud for me even with volume at minimum, these give me far greater control over volume and they don't get gunked up from ear wax (sorry to be gross). These are wired, which is great if you have an existential problem with Bluetooth radio waves right on your skull. The microphone works great, everyone hears me better than on my store bought ear bud set. And one last great feature that I'm sure is overlooked by most, the wire is a flat wire, which in my experience lasts far longer than the traditional circular wires commonly found on headsets.
G**.
Non sono realmente cuffie a conduzione ossea, hanno dei driver come quelli delle cuffie normali, ma incapsulati. Si sente anche senza avere le cuffie appoggiate alla pelle. E, anche appoggiando le cuffie, il volume è bassissimo e la qualità audio è pessima (anche rispetto ad altre cuffie a conduzione ossea che ho provato).
P**O
Dentro de casa se escucha muy bajito pero en la calle con el trafico no se escucha la musica
A**Z
Perfacta
C**S
Ce machin ne fonctionne pas, mauvaise qualité
J**S
J'ai essayé ce casque audio sur plusieurs de mes appareils : - Chaîne stéréo Pioneer : volume à fond, c'est tout juste... mais encore trop faible. - Smartphone Gigaset : volume à fond, ce n'est pas suffisant, même dans un endroit silencieux, donc inutilisable. - Téléviseur Grundig : réglage du volume casque à fond (volume 100 maxi), ce n'est absolument pas suffisant, même dans un endroit silencieux. Avec le casque audio courant, un volume sonore à 75 était amplement suffisant.
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