🎧 Elevate your active lifestyle with sound that moves as fast as you do!
The Soundcore C40i by Anker are open-ear, clip-on Bluetooth 5.4 earbuds featuring 17mm dynamic drivers for clear audio, 21 hours of battery life with fast charging, and a durable, flexible titanium memory wire design. With attachable ear grips for stability, AI-enhanced call clarity, and intuitive button controls, these lightweight, breathable earbuds are engineered for professionals who demand comfort, durability, and seamless connectivity during workouts or daily commutes.
Control Method | App |
Controller Type | Button |
Control Type | Button Control |
Carrying Case Width | 60 Millimeters |
Carrying Case Length | 60 Millimeters |
Carrying Case Weight | 59.2 Grams |
Carrying Case Height | 30 Millimeters |
Item Weight | 0.19 Ounces |
Carrying Case Battery Charging Time | 2 Hours |
Carrying Case Battery Average Life | 21 Hours |
Water Resistance Level | Water Resistant |
Is Electric | No |
Antenna Location | Cycling, Calling, Running, Exercising, Gaming |
Compatible Devices | Cellphones, Tablets, Laptops, Desktops |
Cable Features | Detachable |
Additional Features | Fast Charging |
Enclosure Material | Polycarbonate (PC), Acrylonitrile Butadiene Styrene (ABS) |
Headphone Folding Features | Open Ear |
Headphones Ear Placement | Open Ear |
Carrying Case Color | Graphite Gray |
Color | Graphite Gray |
Battery Average Life | 21 Hours |
Battery Charge Time | 2 Hours |
Wireless Technology | Bluetooth |
Bluetooth Version | 5.4 |
Bluetooth Range | 15 Meters |
Connectivity Technology | Wireless |
Audio Driver Type | Dynamic Driver |
Audio Driver Size | 17 Millimeters |
Frequency Response | 10000 Hz |
Sensitivity | 83 dB |
Impedance | 22 Ohm |
D**R
THE BEST
YOU NEED THEM! THEY ARE THE BEST OF THE BEST. I promise you as a person with small ears these are the only buds i can enjoy having, i have even slept with them, 0% discomfort, they are amazing. Charges fast and last even longer, the battery lasts me like 1 day non stop usage. Volume is great, you have features which allow you to control certain things by pressing the button. It fits perfectly, so comfortable and lightweight, honestly you don't feel them at all. Connection is great, easy to connect through Bluetooth however if u get far from the box of the buds you kind of lose connectivity. Overall amazing!
L**Y
Overall very good for the price
These are a great option for an open-ear design at this price point, the sound is very full and balanced, impressive bass and volume without becoming distorted, I rarely feel the need to turn them up too much even when in a noisy area.I LOVE the Soundcore app, that’s another aspect that really makes it feel like the product is punching above its weight. The app adds so many excellent options to adjust and customize the sound to your liking, is very responsive and quick to update the earbuds, and I’ve run into minimal bugs. The app is also excellent for their sleep earbuds and you can create customized relaxing sounds to upload to the onboard memory (not applicable to this open-ear model, but figured I’d mention it.)Small complaints would be the lack of wireless charging, which is not a huge deal but would have loved to see it to complement my wireless charging docks.Comfort is another slight issue, they feel a bit large and heavy on my small ears, I think these would fit medium-sized ears best, and may be too tight on large or thick ear shapes.They do include some additional small plastic sleeves to slide onto the earbuds to adjust the gap size to be a little smaller (and credit to them for including two sizes, I need different sizes for each ear), but if you have larger ears you’re mostly out of luck, as they will be stiff and probably feel pinchy.I wish they had done a similar design to the Bose Ultra Open buds which I find myself reaching for more often because of the comfort, but still plan to use the Soundcore buds in the summer when they’re more likely to be exposed to moisture and sweat since they have a better water resistance rating.Also concerned I’ll have to remove the plastic sizing sleeves if any moisture collects in there, and I also had one of them crack in half randomly while sitting in the charging case (no idea how that happened!) so I may have to contact the company to get some spares. Wish they sold those separately!As far as I can tell the battery life is very good, though I haven’t used them for a long enough stretch at a time to drain them, so I’m unsure if they live up to the advertised length of time.Overall these are definitely worth a try, I favor the Bose just slightly because of the comfort, but the Soundcore are a really solid pick if they fit you and are a very thoughtfully designed device.
J**S
Love!
I love these because they dont go in your ear! I love that they just slide over and you can still hear what's going on around you. Sadly, im on my third pair because I washed one, then bought a second paid and immediately lost one. They can get a little tight feeling after a whole day, but its really not bad.
C**S
Not as good as they were at first.
Loved these earbuds when I first got them in February. I purchased these while my dad was in the hospital and needed something that wasn’t in ear so I could hear when someone came in the room. It’s only a few months later and they don’t hold battery like they had at first, and the sound cuts out of one of them. I chose to try these because of the several other Soundcore earbuds I have purchased in the past and have loved (so far my favorite is the Liberty 4 purchased last year). These C40i ones are just a bummer.
B**A
Comfortable
I was skeptical about open earbuds but thought I'd try them out to give my ear canals a rest. These are great for that. I've had to edit my review because once I figured out how to wear them I found them extremely comfortable. The sound is good for me. No noise canceling but I have Soundcore ANC for that.
A**L
Muddy and Tinny—- get the Bose ones- worth it! 5 stars for customer service though!
Updated 06/03/25 : Anker obviously care a lot about their customers and I have used their products from the very beginning more than 15 years ago I think. Whilst this product didn’t meet my expectations, Anker responded with excellent customer service. I will continue to use them unreservedly as I know they will stand by their product. Five stars for service brings the rating up to 3 stars all around.Previously:Sound is mainly through 1 speaker and very muddy. It’s not faulty, as I can hear the sound clearly in the right bud when I take the left bud out. But with both in- it is very undefined. Music sounds as though in a tunnel and speech in podcasts/ audiobooks shrill- very unpleasant. Now I’m comparing these against my Bose open ultra ones which are currently almost 3 times the price. But boy are the Bose worth it- the sound is incomparable- immersive sound stage and good bass, with a lot more comfort. Anker is a hard fail here with a tinnier sound and no sound stage. I love most things Anker including their headphones, but not these.
S**R
Amazing! Very comfortable and good sound.
I go to sleep with these in and they don’t bother me. I did need to turn the gain down on my Fiio DAP to reduce the volume enough to get the level suitable for sleep. The sound and comfort are very good.
P**O
Good, but not great. At least it has buttons for controls!
Loved (i) the buttons for controlling start/stop, volume etc. - I prefer buttons much more than touch gestures which can be unpredictable (ii) the configurability of these buttons (iii) the sound quality (iv) the appDislikes (i) the bridge is too stiff, making it harded to take on/off despite me having thin ears (ii) the case is too flimsy.Okay - The price was so-so compared to other options on the market and for the quality of case/ear-piece.
Trustpilot
1 week ago
3 weeks ago