Soundcore C40i

★★★★☆ 4.0 (1,073)

The clip-on design uses 0.5mm memory titanium wires and soft TPU joints rated for 1,000 bends, providing a secure, breathable fit that avoids ear canal fatigue. Physical button controls offer precise, accident-free operation, while the AI-enhanced microphones maintain call clarity in noisy environments. These are best for active users and office workers who need all-day environmental awareness and a stable fit during movement, rather than immersive music listening.

Form Factor open-ear
driver type dynamic
Wireless Yes
bluetooth version 5.4
battery life hours 21
case battery hours 21
water resistance IPX4
multipoint Yes
Soundcore C40i earbuds
55 Overall Score
Also available in:

Snapshot

The 30-Second Version

The Anker Soundcore C40i are lightweight open-ear clip-on headphones with a flexible fit and handy physical buttons. The overall score has improved to 35, but sound quality is still thin and call performance remains among the worst in its class. They're a decent budget pick for situational awareness during runs, but most people will find better audio and value elsewhere.

Pros & Cons

Pros

  • Incredibly lightweight and breathable for all-day wear 89th
  • Flexible titanium frame survives serious bending 87th
  • Physical buttons work great with sweaty or gloved hands 81st
  • Stable clip-on fit stays put during runs and workouts 79th
  • Lets you stay aware of your surroundings naturally

Cons

  • Sound is thin with almost no bass response
  • Call quality is one of the worst we've seen in this category
  • Fit is hit or miss, doesn't work well for smaller ears
  • Battery life is just average at best
  • Wired connectivity limits freedom compared to true wireless buds

What owners think

The Word on the Street

4.0/5 (1073 reviews)
👍 Many buyers say these are the most comfortable and secure open-ear buds they've used for running and all-day wear.
👎 A common complaint is that the speaker doesn't sit close enough to the ear canal, resulting in weak sound and low volume.
🤔 Several owners wanted to love the breathable design but ultimately returned them due to poor call quality and fit issues with smaller ears.

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews - so you can see whether early praise held up.

Owner sentiment has held steady over time
72/100Our AI sentiment readhigh confidence · 38 sources · Oct 2026
1★2★3★4★5★Q1 '25: 5.0★ · 2 reviewsQ2 '25: 2.3★ · 3 reviewsQ3 '25: 4.3★ · 4 reviewsQ4 '25: 4.7★ · 9 reviewsQ1 '26: 5.0★ · 6 reviewsQ2 '26: 5.0★ · 1 review234961Q1 '25Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviews
  1. Q1 202680/1004.6★7 reviews

    Buyers in Q1 2026 praised comfort, sound quality, and open-ear design, with some noting a large headband and minor fit issues.

    • Comfort is a standout; several users forget they're wearing them, even for long periods.
    • Sound quality is excellent, especially after adjusting ear placement; good for calls and environment awareness.
    • Open-ear design allows hearing surroundings and works well for calls; low cost is appreciated.
    • One user found the headband too large and uncomfortable, causing fit issues.
  2. Q4 202576/1004.2★17 reviews

    Buyers in Q4 2025 generally liked the earbuds for sound, fit, and battery, but several reported reliability issues with the right earbud and some found volume or call features lacking.

    • Sound quality praised as clear and detailed, often an upgrade from previous earbuds.
    • Comfortable and secure fit, especially for active use like gym and biking.
    • Right earbud repeatedly fails; replacements also fail, causing frustration.
    • Volume and bass considered insufficient by some; call features lack mute button.
  3. Q3 202571/1004.3★7 reviews

    Buyers praised comfort, sound quality, and battery life, but one criticized bulkiness, sound leakage, and fit. Overall, sentiment is positive with mixed feedback on design.

    • Comfort and lightweight design praised; several noted they forget they're wearing them.
    • Sound quality generally good, with one noting it doesn't block outside noise.
    • Battery life consistently described as good or long-lasting.
    • One reviewer found them bulky, stiff, with sound leakage and poor fit during movement.
  4. Q2 202548/1002.8★5 reviews

    Buyers in Q2 2025 had mixed experiences: some praised comfort and sound for workouts, while others reported fit issues, a bulky case, and a unit that failed to reconnect after first use.

    • One unit failed to reconnect or reset after initial pairing, rendering it useless despite following instructions.
    • Comfortable for running and workouts, with good sound quality and awareness of surroundings; easy initial connection.
    • Fit issues: one reviewer said they didn't stay in ears; another noted a learning curve to insert them.
    • Case size: expected smaller than Shokz, but found it thicker and bulkier; audio quality described as okay.

Based on 25 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

Let's be straight about the audio here. The C40i uses what Anker calls 'expansive drivers,' but the sound score lands in the 32nd percentile for this category. That's disappointing territory. In practice, music comes through clear enough for podcasts and background listening, but it's thin and lacks any real punch. Bass is almost nonexistent, which is a common trade-off with open-ear designs, but these fall behind even compared to other clip-on buds. Call quality is the real weak spot, scoring a rough 6.7 out of 100 and sitting in the 15th percentile. Despite Anker's claims of AI-enhanced call clarity, multiple owners report that people on the other end struggle to hear them in anything but a quiet room. The physical buttons are a nice touch for sweaty workouts, but the overall performance feels like a step back from what we'd expect even from a budget Anker product.

Performance Percentiles

Anc 30.8
Mic 81
Build 78.8
Sound 50.8
Battery 88.9
Comfort 69.7
User Sentiment 33.7
Connectivity 87
Social Proof 62.6
Affordability 45.3

Specifications

Full Specifications

Design

Form Factor open-ear
Wearing Style clip-on
Weight 0.1 kg / 0.1 lbs

Audio

Driver Type dynamic
Driver Size 12
Impedance 22
Codecs soundcore C40i by Anker, Open-Ear Earbuds, Clip-On Headphones, Flexible Joint Design, Button Controls, Lightweight Comfort, Stable Fit with Attachable Ear Grips, Expansive Drivers for Clear Sound

Noise Control

ANC No

Connectivity

Wireless Yes
Bluetooth 5.4
Multipoint Yes

Earbud Battery

Battery Life 21
Fast Charging Fast charge 10 minutes to get 2 hours more playtime
Charging USB-C

Case Battery

Case Battery 21
Case Charging USB-C

Microphone

Microphone Yes
Mic Count 2
NC Mic Yes

Features

Touch Controls No
App soundcore app
Bone Conduction No
Water Resistance IPX4

vs Competition

Stacked against the competition, the C40i struggles to justify itself. The Samsung Galaxy Buds3 Pro and Sony WF-C700N are in a different league for sound and noise cancellation, though they're in-ear designs and cost more. A closer fight is the Soundcore P31i, another Anker product that delivers better overall audio and call performance for a similar price. The Nothing Ear (3) and EarFun Air Pro 4+ also outclass the C40i in mic quality and sound richness. Newer heavy hitters like the Technics EAH-AZ100, JLab JBuds Pods ANC, and Apple AirPods Pro 3rd Generation have also entered the top ranks, and they all leave the C40i in the dust for sound, noise cancellation, and call clarity. Where the C40i wins is purely on the open-ear design. If you absolutely need to hear traffic or your surroundings and hate in-ear buds, it's a niche pick. But for music lovers, any of those competitors will make you happier.

Spec Soundcore C40i Technics EAH-AZ100 JLab JBuds Pods ANC Samsung Galaxy Buds Buds3 Pro Apple AirPods Pro 3rd Generation Sony WF-1000XM5
Form Factor open-ear in-ear in-ear in-ear in-ear in-ear
Driver Type dynamic dynamic dynamic dynamic dynamic dynamic
Wireless true true true true true true
Active Noise Cancellation false true true true true true
Bluetooth Version 5.4 5.3 5.4 5.4 5.3 5.3
Battery Life Hours 21 8 10 6 8 8
Case Battery Hours 21 28 56 26 24 24
Water Resistance IPX4 IPX4 IP55 IP57 IP57 IPX4
Multipoint true true true true true true
Compare Compare Compare Compare Compare
Product AncMicBuildSoundBatteryComfortUser SentimentConnectivitySocial ProofAffordability
Soundcore C40i 30.88178.850.888.969.733.78762.645.3
Technics EAH-AZ100 Compare 97.597.478.899.776.793.292.599.881.22.9
JLab JBuds Pods ANC Compare 93.597.490.887.19493.292.598.195.532.9
Samsung Galaxy Buds Buds3 Pro Compare 97.597.498.992.370.693.233.799.689.77.2
Apple AirPods Pro 3rd Generation Compare 97.58198.990.473.269.733.799.699.311
Sony WF-1000XM5 Compare 97.597.478.898.873.293.211.999.962.66.2

Price

Value & Pricing

Pricing on the C40i is all over the map depending on the vendor, with a spread from $43 up to an absurd $1,317. Obviously, don't pay anything close to the high end. At the $43 to $50 range on Amazon, you're getting what you pay for. These are cheap open-ear buds that do the bare minimum. The problem is that for just a bit more cash, you can grab something like the Soundcore P31i or EarFun Air Pro 4+, which deliver far better sound and actually usable mics. If open-ear is a must-have and your budget is tight, the C40i is an option, but it's not the value king it should be.

From CA$110 1 offer across 1 retailer
Amazon 1 offer From CA$110

Price History

CA$90 CA$95 CA$100 CA$105 CA$110 CA$115 Jul 20Sep 28Nov 11 CA$110

Read more

Overview

If you're hunting for open-ear earbuds that won't break the bank, the Anker Soundcore C40i probably popped up in your search. These are clip-on style headphones, meaning they rest outside your ear canal instead of jamming inside it. The pitch is simple: breathable comfort, a flexible titanium wire frame, and physical button controls for around $43 to $50 depending on where you look. For runners or anyone who hates that plugged-up feeling of traditional earbuds, the concept is genuinely appealing. But after digging into the specs and what over a thousand buyers are saying, the execution is a real mixed bag. The C40i nails the lightweight, stay-put fit for some, but stumbles hard on sound quality and call performance. It's a budget-friendly way to dip your toes into open-ear audio, just don't expect it to replace your daily drivers for music.

Common Questions

Q: Are the Anker Soundcore C40i good for running?

Yes, the clip-on design and flexible titanium frame keep them very stable during runs, and the open-ear style lets you hear traffic for safety.

Q: How is the call quality on the Soundcore C40i?

Call quality is a weak point. Despite AI noise reduction claims, the mic scores in the 15th percentile and your voice often sounds muffled to callers.

Q: Do the Soundcore C40i have good bass?

No, bass is very light. The open-ear design naturally sacrifices low-end punch, and these fall behind even compared to other clip-on headphones.

Q: Are the Soundcore C40i better than the Soundcore P31i?

For sound and call quality, the P31i is the better pick. The C40i only wins if you specifically need an open-ear design that doesn't block ambient noise.

Who Should Skip This

Skip the C40i if sound quality or taking calls is a priority. The audio is thin and the mic is one of the weakest we've tracked. If you have smaller ears, the fit will likely be frustrating since the speaker housing doesn't adjust enough to sit properly. Anyone who wants deep bass or immersive music should look at the Soundcore P31i, EarFun Air Pro 4+, or newer top performers like the Technics EAH-AZ100, JLab JBuds Pods ANC, and Apple AirPods Pro 3rd Generation instead. And if you're just curious about open-ear buds, know that this budget option comes with budget compromises that might turn you off the category entirely.

Verdict

Should you buy the Anker Soundcore C40i? Only if open-ear is a non-negotiable feature and you're on a strict budget. The design is clever, the build is flexible, and the physical buttons are genuinely useful for active folks. The overall score has climbed to 35, which is a meaningful jump from where it started, but that's still not enough to paper over the mediocre sound and disappointing call quality. If you're just looking for cheap workout buds, there are better-sounding options that still let in some ambient noise. The C40i fills a specific niche, but for most people, it's a pass.

Usage Scores

Calls (52)Music (42.8)Overall (55)Budget (70.4)Gaming (57.6)Travel (50.5)Commute (42.8)Fitness (66.7)
  • Calls52
  • Music42.8
  • Overall55
  • Budget70.4
  • Gaming57.6
  • Travel50.5
  • Commute42.8
  • Fitness66.7

Other Configurations1

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