If you want a dedicated set of in-ear headphones with active noise cancellation and extended battery life for focused study sessions, choose EarFun Air Pro 3; if you need a portable transmitter to wirelessly connect your existing Bluetooth headphones to an airplane seat or TV, choose Avantree Relay.
These two products solve fundamentally different problems for the student or traveler who values audio clarity but operates in distinct environments. One is a complete listening system designed to isolate you from the world, while the other is an accessory that bridges the gap between legacy equipment and modern wireless tech. Understanding this distinction is the only way to make the right choice without wasting money on features you will never use.
• EarFun Air Pro 3: Its greatest strength is the all-in-one experience featuring Qualcomm aptX Adaptive audio, 40 hours of total playtime, and six-microphone noise cancellation for calls; its trade-off is that it requires a full charging case and is an entirely new purchase rather than an add-on. This pick is for the student or commuter who needs a primary pair of earbuds for deep focus and clear communication.
• Avantree Relay: Its biggest advantage is immediate compatibility with any device having a 3.5mm jack, allowing up to two people to listen simultaneously while traveling on planes or watching TV; its limitation is that it is just a transmitter dongle and does not include the actual headphones or earbuds. This pick is for the frequent flyer or home theater enthusiast who already owns high-quality Bluetooth headphones but lacks a compatible input source.
The EarFun Air Pro 3 is engineered as a standalone solution for anyone seeking immersion. At its core lies the Qualcomm QCC3071 SoC paired with aptX Adaptive Audio technology, which is a significant upgrade for audio fidelity. This chipset allows the 11mm wool composite dynamic drivers to deliver deep bass and crisp highs without distortion, even when the signal travels over long distances via Bluetooth 5.3. For a student trying to concentrate in a noisy library or coffee shop, this combination creates a sonic environment where the music or lecture remains pristine. The inclusion of low 55ms latency ensures that if you are watching educational videos or engaging in online classes, your lips and audio stay perfectly synchronized, a detail that often gets overlooked but is critical for learning retention.
Beyond sound quality, the design prioritizes comfort and safety for extended wear. The earpieces feature soft memory foam headband and earpads (in the context of the specific model variations) alongside silicone materials that comply with RoHS2.0 and FCC standards. More importantly, the product includes a specific volume-limiting feature capped at 85/94dB, which aligns with WHO recommendations to prevent hearing damage during long study marathons. You do not have to worry about accidentally turning the volume too high and hurting your ears after four hours of continuous listening. The 40-hour battery life means you can go days without reaching for a charger, making it ideal for those who forget to charge their gear overnight.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-28 · 7 min read · Independent comparison
This product is best suited for individuals who need a primary audio device for daily life. If your goal is to block out distractions while studying, take calls in windy outdoor conditions, or simply enjoy high-fidelity music without wires, this is the logical path. However, if you already own a fantastic pair of open-back headphones or wired earbuds that you love, buying these might be redundant unless you specifically need the active noise cancellation and the advanced microphone array provided by the six built-in mics using Qualcomm cVc 8.0 technology. It is a complete package, not an add-on, so you must be ready to commit to a new form factor.
The Avantree Relay serves a very specific, niche purpose that has become increasingly relevant for travelers and home entertainment enthusiasts. It is not a headphone; it is a Bluetooth 5.3 adapter that plugs into a 3.5mm AUX jack. Its primary function is to act as a bridge, allowing older devices like airline seatback screens, gym treadmills, or older televisions to output audio to modern Bluetooth headphones. If you travel frequently and have ever been frustrated by the lack of wireless connectivity on flights, this device solves that problem instantly. The unit comes in a pack of two, which supports a unique "Listen Together" feature. This allows you to connect up to two pairs of Bluetooth headphones to a single source, meaning you can share movies or music with a travel companion directly from the plane screen without needing a splitter cable.
The technical specifications support high-quality transmission despite the small size. Like the EarFun, it utilizes aptX-Adaptive and aptX-Low Latency codecs, ensuring that the audio quality remains high and synchronization is maintained. This is crucial when watching movies on a plane where lip-sync errors can ruin the experience. The battery life offers up to 20 hours of operation, which is sufficient for most long-haul flights, and you can continue using the device while it charges via its power source, eliminating the risk of running out of juice mid-flight. The LED indicators provide visual feedback on connection status and battery levels, removing the guesswork during setup.
This product is strictly for people who already possess high-quality Bluetooth headphones or earbuds and need a way to connect them to non-Bluetooth sources. It is the ultimate tool for the "best over ear headphones for study" user who wants to keep their favorite gear but needs to use it on a plane. It is also perfect for the "best clip on earbuds for study" enthusiast who wants to switch from a stationary desk setup to a mobile one without changing their audio hardware. If you do not already own a pair of Bluetooth headphones, this device will not work for you because it does not produce sound itself. It is purely a connector.
• Best for Battery Life → EarFun Air Pro 3 offers 40 hours of total playtime, doubling the 20-hour runtime of the Relay dongle.
• Best for Call Quality → EarFun Air Pro 3 wins decisively with six microphones and cVc 8.0 technology designed to filter wind and background noise.
• Best for Travel Connectivity → Avantree Relay is superior for air travel as it connects directly to the standard 3.5mm jacks found on almost every airline seat.
• Best for Shared Listening → Avantree Relay allows two devices to connect simultaneously, a feature impossible with the single-unit EarFun earbuds.
• Best for Study Isolation → EarFun Air Pro 3 provides the physical isolation and noise cancellation required for deep concentration in loud environments.
• Best for Existing Gear Owners → Avantree Relay saves money by letting you use headphones you already own rather than forcing a new purchase.
• Best for Low Latency Gaming → Both offer 55ms latency capabilities, but the EarFun is optimized for direct pairing while the Relay depends on the connected headphones' support.
• Best for Safety Features → EarFun Air Pro 3 includes built-in volume limiting (85/94dB) to protect hearing during long sessions, a feature absent in the Relay.
For my own setup, particularly when I am trying to maintain focus for hours of reading or research, I would buy the EarFun Air Pro 3. The ability to control the volume limit and the sheer 40-hour battery life removes the anxiety of managing power during a long study session. While the Avantree Relay is an ingenious piece of engineering for travelers, it feels like a temporary fix for a problem that the EarFun solves permanently. If your primary goal is finding the best over ear headphones for study or the best open ear earbuds for study, the EarFun Air Pro 3 delivers a complete, self-contained ecosystem that handles noise, call quality, and longevity better than any adapter ever could.
Yes, they connect directly to your phone or tablet via Bluetooth 5.3. However, if you need to connect to the airplane's seat screen which uses a 3.5mm jack, you would need a separate transmitter like the Avantree Relay to bridge the connection.
No, the Avantree Relay is sold as a transmitter only. You must already own a pair of Bluetooth headphones or earbuds to use it. It works by sending audio from a 3.5mm source to your existing wireless device.
Yes, the product includes a specific volume limit feature set to 85/94dB, which meets WHO recommended levels to prevent hearing damage, making it suitable for kids during study or travel.
The EarFun Air Pro 3 offers significantly longer usage with up to 40 hours of playtime compared to the 20-hour battery life of the Avantree Relay dongle.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.