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🎧 Stay connected, stay aware — sound that moves with you
The GZCRDZ BC900 wired bone conduction headphones deliver sound through your cheekbones, protecting your eardrums while keeping you alert to your surroundings. Featuring a sweat-resistant design, noise-cancelling microphone, and universal 3.5mm compatibility, these ultra-lightweight headphones are engineered for active professionals who demand safety, convenience, and clear calls during cycling, running, or daily commutes.
| ASIN | B07CB7VWT8 |
| Additional Features | Microphone Included, USB connectivity, Universal, sports-and-exercise |
| Age Range Description | Adult |
| Antenna Location | Calling, Gaming, Running |
| Audio Driver Type | Bone Conduction Driver |
| Best Sellers Rank | #16,239 in Electronics ( See Top 100 in Electronics ) #1,834 in Headphones & Earbuds |
| Brand | GZCRDZ |
| Brand Name | GZCRDZ |
| Built-In Media | Headphones |
| Cable Features | Retractable |
| Color | Black |
| Compatible Devices | Smartphones, MP3 Players, and some Laptops |
| Connectivity Technology | Wired |
| Control Method | App |
| Control Type | Call Control |
| Customer Package Type | FFP |
| Customer Reviews | 3.3 out of 5 stars 220 Reviews |
| Ear Placement | Open Ear |
| Earpiece Shape | Over-Ear |
| Enclosure Material | Plastic |
| Form Factor | Behind The Neck |
| Frequency Range | 20 Hz - 20,000 Hz |
| Global Trade Identification Number | 06959913502528 |
| Headphone Folding Features | Behind The Neck |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | Open Ear |
| Headphones Jack | 3.5 mm Jack |
| Is Autographed | No |
| Is Electric | No |
| Item Weight | 20 Grams |
| Manufacturer | China |
| Model Name | BC900 |
| Model Number | C630 |
| Noise Control | Active Noise Cancellation |
| Number of Items | 1 |
| Series Number | 900 |
| Specific Uses For Product | Sports and Exercise |
| Style Name | Sporty |
| Theme | Video Game |
| Unit Count | 1.0 Count |
| Warranty Description | 1-year warranty |
| 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**E
Does not appear to work as advertised
I tried placing in several different locations around the ear. I only found one position that worked and even at full volume I could barely hear the music. The only way to hear was to have it almost completely covering the ear opening which defeats the purpose. Wearing the product as shown in the picture produced zero sound.
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.)
T**N
Nice!
Purchased to use with my cobra vhf 350. Had to put a 3/16 rivet washer over connection at the handheld cobra mic to get both sides to work and it’s working great! Probably works fine on most applications without washer. Very comfortable to wear and amazingly clear!
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.
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.
L**L
So quiet
Bought 2 of these for watching TV through my Roku remote. 1st pair isn't to bad but quiet. 2nd pair is so quiet with volume completely cranked I can barely hear. And strap isn't at all adjustable.
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.
P**O
No se escucha nada
Dentro de casa se escucha muy bajito pero en la calle con el trafico no se escucha la musica
A**Z
Perfecta
Perfacta
C**S
Bof...
Ce machin ne fonctionne pas, mauvaise qualité
J**S
Son beaucoup trop faible, ce n'est pas utilisable pour mes trois appareils...
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.
R**L
Se escucha super bajito
Haber, para usar en un trabajo que tienes que llevar tapones puestos si te funcionarán.. pero sin tapones, no valen pa' na...los quería para ensayar con la claqueta y escuchar la banda a la vez pero se escucha muy muy bajo, no los recomiendo más qué para el caso dicho al principio, no son tan baratos y dan muy muy poco sonido y la diadema para un concierto es incómoda y no casa bien... tiré el dinero.
Trustpilot
1 month ago
1 month ago