If you want a reliable, plug-and-play transmitter to wirelessly stream audio from an airplane seat or TV to your existing AirPods for calls and entertainment, choose Avantree Relay; if you need a complete pair of open-ear headphones with advanced call noise cancellation and all-day battery life for commuting and work, choose Weofly Mixer Open Ear. These two products serve fundamentally different roles in the audio ecosystem, and picking the wrong one will leave you frustrated before you even finish unboxing. One is a bridge that connects your old wired devices to modern Bluetooth earbuds, while the other is a standalone headset designed to replace everything else on your desk. I have analyzed the specifications and design intent of both units to help you decide which fits your specific workflow, especially when the primary goal is clear communication during phone calls.
• Avantree Relay: Its biggest strength is universal compatibility with legacy 3.5mm inputs like airline seats and gym equipment, allowing you to use any Bluetooth headphones; its trade-off is that it requires you to already own a separate pair of earbuds and offers no built-in microphone for making calls yourself.
• Weofly Mixer Open Ear: Its biggest strength is the integrated dual-noise reduction technology (CVC and ENC) specifically engineered for crystal-clear calls in noisy environments combined with a lightweight, open-ear design for comfort; its trade-off is that it is a dedicated headset rather than a transmitter, meaning it cannot convert analog signals from non-Bluetooth sources into wireless streams.
• Who picks Avantree Relay: Travelers who fly frequently and want to use their high-end AirPods or earbuds on planes without relying on bulky in-flight entertainment systems.
• Who picks Weofly Mixer Open Ear: Remote workers, commuters, and athletes who need a comfortable, secure headset that keeps them aware of their surroundings while maintaining professional call quality.
The Avantree Relay is not a set of headphones; it is a specialized adapter designed to solve a very specific problem: the lack of Bluetooth connectivity on older audio sources. If you are someone who travels by air often, you know the struggle of being forced to use flimsy, uncomfortable plastic headsets provided by the airline, or dealing with the frustration of trying to find a way to connect your own premium headphones to the seatback screen. This device bridges that gap perfectly. It features a dual 3.5mm adapter included in the box, ensuring it works regardless of whether the airplane seat uses the standard round jack or the newer rectangular connector found on many modern aircraft. You simply plug it in, and suddenly your favorite Bluetooth earbuds become wireless.
For calls, this product functions differently than a traditional headset. The Relay itself does not have a microphone for you to speak through; instead, it acts as a transmitter that sends audio from the source to your listening device. If you are using compatible Bluetooth headphones with a built-in mic, such as certain models of AirPods, you can make calls through those earbuds once they are connected to the Relay. The unit supports aptX Adaptive and aptX Low Latency codecs, which ensures that when you do engage in conversation or watch video, the audio remains synchronized and high-quality. It also utilizes Bluetooth 5.3 technology, providing a stable connection that minimizes dropouts even in crowded areas with lots of radio interference.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-25 · 8 min read · Independent comparison
However, you must understand what this device is not. It is not a standalone solution. If you buy the Avantree Relay expecting a new pair of headphones, you will be disappointed. You must already possess a pair of Bluetooth headphones or earbuds to pair with it. The package includes two units, which allows you to share the audio experience with a travel companion, letting two people listen to the same movie or podcast on their own devices simultaneously. The battery life is rated for up to 20 hours, which is sufficient for most long-haul flights, and you can continue to use the device while it charges via the cable. If your primary need is to upgrade the audio experience on a plane or a treadmill without buying new hardware, this is the tool you need. But if you are looking for a single device that handles both the transmission and the calling, this is not it.
In stark contrast, the Weofly Mixer Open Ear is a complete, standalone audio solution designed for people who spend significant time on calls while needing to stay aware of their environment. This is not an adapter; it is a full-fledged headset featuring an open-ear design that sits outside the ear canal rather than inside it. This design choice prioritizes comfort and situational awareness, making it ideal for runners, cyclists, or office workers who need to hear colleagues or traffic while listening to music or taking calls. The build quality utilizes ultra-soft, skin-friendly liquid silicone, ensuring that the weight is distributed comfortably on the outer ear without causing pressure or pain during extended wear.
The standout feature for anyone working remotely or traveling frequently is the call capability. Unlike many open-ear headphones that suffer from wind noise or echo, the Weofly Mixer integrates CVC and ENC dual noise reduction technologies. These features actively block ambient noise and cancel out echoes, ensuring that your voice comes through clearly even in chaotic settings like busy cafés or windy streets. The device is powered by a professional-grade Qualcomm QCC3095 audio chip, supporting Snapdragon Sound and aptX HD, which delivers lossless CD-quality sound. This means the audio fidelity is high enough for critical listening, while the acoustic steering technology helps minimize sound leakage so others around you don't hear your media at normal volumes.
Battery life is another area where this product shines for daily users. With a claimed playtime of up to 40 hours, you can go days or even weeks between charges depending on your usage patterns. This makes it exceptionally suitable for long commutes or multi-day business trips where finding a power outlet is difficult. The flat-fold design allows it to fit easily into the included carrying case, protecting it from damage in your bag. It also supports multi-point connectivity, allowing you to switch seamlessly between your laptop for a meeting and your phone for a personal call without having to re-pair devices manually. If your life revolves around constant connectivity and you need a device that feels light and breathable, the Weofly Mixer is engineered for exactly that lifestyle.
• Best for legacy aviation/TV compatibility → Avantree Relay, because it physically plugs into 3.5mm AUX jacks that the Weofly cannot access directly.
• Best for call clarity in noisy environments → Weofly Mixer Open Ear, due to its dedicated CVC and ENC dual noise reduction microphones.
• Best for battery endurance → Weofly Mixer Open Ear, offering 40 hours of continuous playback compared to the Relay's 20-hour limit.
• Best for sharing audio with a partner → Avantree Relay, since it supports connecting two Bluetooth devices simultaneously for shared listening.
• Best for all-day comfort and awareness → Weofly Mixer Open Ear, thanks to its open-ear, non-in-ear design that avoids ear canal fatigue.
• Best for upgrading existing gear → Avantree Relay, as it lets you use your current high-end earbuds with older devices.
• Best for seamless device switching → Weofly Mixer Open Ear, utilizing multi-point connectivity to manage multiple sources effortlessly.
• Best value for a single purchase → Weofly Mixer Open Ear, as it provides the full headset experience including drivers and mics, whereas the Relay requires you to buy headphones separately.
After weighing the specs and intended use cases, I would personally buy the Weofly Mixer Open Ear if my primary requirement is for calls and general daily use. The ability to have a dedicated, high-fidelity headset with active noise cancellation for calls and an open design for comfort is a much more versatile solution for most people than an adapter that only works if you already own compatible earbuds. While the Avantree Relay is a fantastic niche tool for travelers who hate in-flight screens, the Weofly Mixer serves as a comprehensive "best bluetooth headphones for calls" solution that handles music, meetings, and environmental awareness in one package. It solves the actual problem of poor call quality and discomfort that plagues many users, making it the smarter investment for a modern lifestyle.
Neither product is explicitly designed as "sleep headphones." The Avantree Relay is a transmitter for awake use, and the Weofly Mixer has a band that goes over the head, which may be uncomfortable for side sleepers, though its open design prevents ear pressure.
No, the Weofly Mixer comes with a carrying case and is ready to use out of the box as a standalone Bluetooth headset, unlike the Avantree Relay which requires you to pair it with your own headphones.
You can make calls if you pair it with Bluetooth headphones that have their own built-in microphone; the Relay itself does not contain a microphone for capturing your voice.
The Weofly Mixer offers significantly longer battery life with up to 40 hours of playtime, whereas the Avantree Relay provides up to 20 hours of transmission time.
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