Soundcore A3874 Review: Open-Ear Earbuds for Active Users and Travelers
The Soundcore A3874 offers a comfortable open-ear design with adjustable fit, long battery life, and a standout real-time translation feature for users who need to stay aware of their surroundings.
By Elvis Dicki
Updated October 20, 2026
The Soundcore A3874 (also known as the Soundcore AeroFit 2) represents a significant entry in the open-ear headphones category, designed for users who prioritize situational awareness and all-day comfort without sacrificing audio quality. These wireless earbuds target active individuals, travelers, and professionals who need to stay connected to their environment while enjoying music, taking calls, or utilizing innovative features like real-time translation. With a focus on a secure, customizable fit and directional audio technology, they aim to deliver a private listening experience with minimal sound leakage, making them a versatile option for workouts, commutes, and international travel.
Bottom line: The Soundcore A3874 provides a compelling blend of comfort, extended battery life with wireless charging, and unique AI-powered translation capabilities, though its open-ear design inherently allows ambient noise in and requires proper setup for the best experience.
Prime Soundcore AeroFit 2 Open Ear Earbuds by Anker
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Soundcore A3874 at a Glance
| Specification | Detail |
|---|---|
| Model Name | Soundcore AeroFit 2 (A3874) |
| Design | Open-Ear, Adjustable Hooks |
| Connectivity | Bluetooth 5.4, Multipoint Connection |
| Playtime (Earbuds/Case) | 10 hours / 42 hours total |
| Driver Size | 20 mm x 11.5 mm racetrack drivers |
| Water Resistance | IP55 |
| Key Feature | Real-Time Translation (100 languages) |
| Charging | Wireless Charging Case |
| Frequency Response | 20Hz – 40kHz |
| Control Type | Touch Control |
Design and Build
The Soundcore A3874 employs a non-invasive, open-ear design characterized by its double-curved shape and soft materials intended for all-day wear. The standout design element is the innovative 4-level adjustable ear hooks, which are engineered to provide a secure and comfortable fit tailored to over 99% of ear shapes and sizes. This adjustability is key to the product’s value proposition, moving beyond a one-size-fits-all approach common in many earbuds. The enclosure is constructed from PC+ABS+LSR materials, suggesting a blend of durability and flexibility.
The charging case, made from PC+ABS, supports wireless recharging for added convenience. The earbuds feature an IP55 rating for water and dust resistance, making them suitable for workouts, running, and exposure to sweat or light rain. The overall build prioritizes a lightweight, breathable feel that avoids inserting anything into the ear canal, a significant advantage for users who find in-ear models uncomfortable during prolonged use. For more on audio gear designed for immersive experiences, explore our expert picks for soundbars.
Performance and Features
Audio Quality and Technology
Soundcore equips the A3874 with 20 mm x 11.5 mm racetrack dynamic drivers and BassTurbo acoustics, promising twice the bass depth of previous models alongside clear mids and vivid treble. The directional acoustic technology, combined with the adjustable ear hooks, is designed to guide sound precisely toward the ear canal. This aims to minimize sound leakage—a common concern with open-ear designs—and provide a more private listening experience. The headphones support the LDAC codec via Bluetooth 5.4 for high-resolution audio transmission and stable connectivity within a 10-meter range. The frequency response ranges from 20Hz to 40kHz, and the drivers have a sensitivity of 127.5 dB with 16-ohm impedance.
Connectivity and Controls
Bluetooth 5.4 ensures a stable and efficient connection to compatible devices like cellphones, laptops, and tablets. The specification sheet confirms multipoint connection capability, allowing the earbuds to be paired with two devices simultaneously. User interaction is handled through touch controls on the earbuds, providing a modern, button-free interface for managing playback, calls, and likely voice assistant access. The lack of a physical headphone jack is standard for this product category.
Standout Features: AI Translation and Calls
A defining feature of the Soundcore A3874 is its free AI-powered real-time translation, supporting 100 languages. This is positioned as a tool for travel and international communication. The manufacturer notes that optimal performance requires the soundcore app to be version 3.8.7 or later and the earbud firmware to be updated to the latest version. For call handling, AI-powered noise reduction is implemented to ensure clear voice transmission, a helpful feature for taking calls in moderately noisy environments. The product’s versatility for tech-enhanced living aligns with trends seen in our roundup of the best AI smart home devices.
Setup, Support and Ownership
Initial setup involves pairing via Bluetooth and, crucially, installing and updating the companion soundcore app to access features like the translator and audio customization. The adjustable ear hooks may require some time for first-time users to find their ideal fit from the four available positions. The manufacturer provides an 18-month warranty, which is a strong commitment for consumer electronics. Ownership is enhanced by the wireless charging case, which offers tangle-free recharging and extends total playtime to 42 hours. The case battery capacity is 750 mAh and takes about two hours to charge, while the earbuds themselves charge in approximately one hour. Long-term value is supported by firmware updates delivered via the app, which are essential for maintaining the performance of advanced features like translation.
What Owners Say
At the time of this analysis, the Soundcore A3874 holds a strong aggregate rating. Owner feedback consistently highlights the exceptional all-day comfort provided by the open-ear design and soft materials as a major positive. The secure fit achieved through the adjustable hooks is frequently praised, especially for active use cases like running and workouts. The battery life, offering up to 10 hours per charge and 42 hours with the case, is noted as reliable for extended use. The real-time translation feature receives positive remarks for its utility during travel, though some users mention the importance of ensuring the app and firmware are fully updated for it to function accurately. The sound quality, particularly the bass performance for an open-ear model, is generally viewed favorably.
Pros and Cons
Pros
- Excellent all-day comfort from open-ear construction
- Secure, customizable fit with 4-level adjustable hooks
- Strong battery life with wireless charging convenience
- Useful real-time translation across 100 languages
- Good sound quality with enhanced bass for open-ear design
- Stable Bluetooth 5.4 connection with multipoint support
Cons
- Translation requires latest app and firmware updates
- Open-ear style allows ambient noise in loud environments
- Adjustable hooks add initial setup time for perfect fit
- Sound isolation is minimal by design
Who Should Buy It (and Who Should Skip It)
The Soundcore A3874 is an ideal choice for active users, runners, and cyclists who need to remain aware of traffic and surroundings while listening to audio. It’s also well-suited for travelers who can benefit from the real-time translation feature and for professionals in offices or home setups who want to hear ambient sounds like doorbells or colleagues. Individuals who experience discomfort from traditional in-ear earbuds during long sessions will find the open-ear design particularly appealing.
Conversely, users who prioritize complete noise isolation for focused work in noisy cafes, libraries, or during air travel should consider closed-back or noise-cancelling in-ear models instead. Audiophiles seeking the absolute highest fidelity may find the open-ear design’s acoustic limitations, despite the Hi-Res support, to be a compromise. Those who prefer a completely seamless, no-adjustment fit might be slightly inconvenienced by the need to set the hook levels initially. For users focused on immersive, distraction-free audio for gaming or media consumption, our guides on the best ultra-wide monitors and best desk chairs for gaming cover complementary gear.
Final Verdict
The Soundcore A3874 successfully executes on its core promise: delivering a comfortable, secure, and awareness-preserving audio experience. The adjustable hook system is a genuine innovation that addresses fit issues for a wide range of users, while the directional audio technology works to mitigate the typical drawbacks of sound leakage. The combination of long battery life, wireless charging, IP55 resistance, and clear call quality makes it a robust companion for daily activities and workouts. The inclusion of real-time translation is a forward-thinking feature that adds significant value for a specific user base, setting it apart from many competitors in the open-ear category.
While the open-ear design is its greatest strength, it is also its primary limitation for environments where noise isolation is desired. The requirement to manage app and firmware updates for the translation feature adds a layer of complexity. Overall, for its target audience—active individuals, travelers, and comfort-focused users—the Soundcore A3874 offers a well-rounded and feature-rich package that justifies consideration as a primary pair of wireless earbuds.
FAQs
How does the real-time translation feature work?
The translation feature uses AI within the soundcore app to translate spoken language in real time through the earbuds. It supports 100 languages and is designed for conversations during travel or meetings. For the feature to work with high accuracy, you must ensure the soundcore app is updated to at least version 3.8.7 and that the earbuds’ firmware is also updated to the latest version via the app.
Are the Soundcore A3874 good for running?
Yes, they are well-suited for running. The IP55 water resistance protects against sweat and light rain, and the secure, adjustable ear hooks are designed to prevent the earbuds from falling out during vigorous movement. The open-ear design allows runners to maintain situational awareness of their surroundings, which is a critical safety feature for outdoor exercise.
Can you use these earbuds for making calls in noisy places?
The Soundcore A3874 includes AI-powered noise reduction for calls, which is intended to filter out background noise and improve voice clarity for the listener. However, as open-ear earbuds, they do not physically block ambient noise from entering your own ear, so you may still hear surrounding sounds during a call. The call clarity for the recipient is enhanced by the AI, but your own listening experience will not be isolated.
How long does the battery last, and how do you charge it?
The earbuds provide up to 10 hours of playtime on a single charge. The included charging case holds additional charges, extending the total playtime to 42 hours. The case supports wireless charging, allowing for convenient, cable-free recharging. The earbuds take about one hour to charge, and the case takes approximately two hours to charge fully.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.