If you want a versatile adapter with more than 25 hours of stated battery life and transmit/receive modes, choose Twelve South AirFly Pro; if you need a supplied two-prong airplane adapter and clear indicators for pairing two headphones, choose PYYUWF 5.4. For remote work, the deciding question is whether you need the adapter mainly to send audio from a wired jack to wireless headphones or also to send phone audio back to a wired audio system.
Both support two headphone connections and can also work in receive mode. AirFly Pro emphasizes longer stated battery life and aptX codecs; PYYUWF 5.4 offers Bluetooth 5.4, a 20-hour battery, and an airplane adapter in the box.
• Twelve South AirFly Pro: Its biggest strength is a stated battery life of more than 25 hours, along with TX and RX modes. Its trade-off is that no two-prong airplane adapter is listed among the included items.
• PYYUWF 5.4: Its biggest strength is the included dual-prong airplane adapter and dedicated indicators for connecting two headphone sets. Its trade-off is a shorter stated battery life of 20 hours.
• Both: Each can transmit audio from a 3.5mm jack to two pairs of wireless headphones and switch to receiving Bluetooth audio for a wired AUX system.
• Choose AirFly Pro if long stretches between charges and flexibility across audio setups matter most.
• Choose PYYUWF 5.4 if you want an adapter for older two-prong aircraft sockets and visible pairing indicators.
AirFly Pro is a Bluetooth audio adapter for a 3.5mm audio jack. In transmit mode, it can send sound from an airplane entertainment system, gym machine, TV, gaming device, or another wired audio source to wireless headphones. That is useful when your headphones connect by Bluetooth but the source you want to listen to still has a headphone jack.
The stated battery life is more than 25 hours, and the included USB-C charging cable can be used while the adapter is charging. AirFly Pro also supports aptX Low Latency, aptX, and SBC audio codecs. It can connect to two headphone sets at once, which is handy if two people want to listen to the same screen. For remote work, its 3.5mm input can be useful when a workplace or travel setup provides wired audio but you prefer your own wireless headphones.
The RX mode adds another use: AirFly Pro can receive audio from a phone or tablet and pass it to a wired speaker or AUX input, such as a car stereo. It remembers paired headphones and can reconnect automatically after initial pairing. Its listed accessories include a travel pouch and keychain holder.
Who should skip it: Skip AirFly Pro if an included two-prong airplane adapter is a must-have; one is not listed with its included accessories.
PYYUWF 5.4 is also a two-way Bluetooth audio adapter. TX mode sends audio from a 3.5mm jack to wireless headphones, while RX mode lets a wired AUX system receive audio from a Bluetooth source. Its listed uses include airplane screens, TVs, gym equipment, cars, and wired speakers. That makes it a practical option for someone moving between travel and home or car audio.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
The standout travel detail is the included dual-prong airplane headphone adapter. It is intended to bridge the connection on aircraft with a two-prong socket, while the transmitter can also connect directly to a single 3.5mm AUX jack. PYYUWF lists a 20-hour battery life and a two-hour USB-C charge time. A four-level battery indicator gives a more visible sense of remaining charge than a simple low-battery alert.
Its Bluetooth 5.4 connection is listed with a range of up to 33 feet, and the product supports pairing two headphones at once. Dedicated “1” and “2” indicators are intended to show which headphone connections are active. For remote work, those visible indicators may help when sharing audio from a wired source with another person, although this is an audio adapter rather than a microphone or call headset.
Who should skip it: Skip PYYUWF 5.4 if your priority is the longer stated battery life; its listed 20 hours is less than AirFly Pro’s more than 25 hours.
• Best for longer stretches between charges → Twelve South AirFly Pro. Its stated battery life is more than 25 hours, compared with 20 hours for PYYUWF 5.4.
• Best for older two-prong airplane sockets → PYYUWF 5.4. A dual-prong airplane adapter is listed as included.
• Best for receiving Bluetooth audio on a wired AUX system → Tie. Both products have RX mode for sending Bluetooth audio to a wired speaker or car stereo with AUX input.
• Best for a clear battery-level readout → PYYUWF 5.4. Its four-level LED gauge is more specific than AirFly Pro’s described low-battery alert.
• Best for aptX codec options → Twelve South AirFly Pro. Its listed codecs include aptX Low Latency, aptX, and SBC.
• Best for a specified wireless range → PYYUWF 5.4. Its Bluetooth range is listed as up to 33 feet, or 10 meters.
• Best for sharing audio with a second listener → Tie. Both support two headphone connections at once; PYYUWF also lists separate indicators marked “1” and “2.”
• Best for a remote-work audio setup with several possible connections → Twelve South AirFly Pro, in my opinion. Its stated battery life and TX/RX flexibility suit a routine that may shift between a wired audio source and an AUX system.
These devices are adapters, not headphones. They do not replace the headphones you already own, and the supplied features do not describe a built-in microphone for calls. If you are searching for the best transparency mode earphones for remote work, neither adapter provides transparency mode: that feature concerns how headphones handle outside sound. Likewise, neither is a pair of best over ear headphones for remote work. You will need compatible headphones separately.
The same distinction matters if your goal is the best crystal clear calls earphones for remote work. The specs here focus on transmitting and receiving audio, codec support, battery life, and connections. They do not establish call-microphone performance or noise cancellation. Choose between these adapters based on where your audio is coming from, where you need it to go, and whether you will use TX, RX, or both.
Also think about the socket you expect to use. PYYUWF includes a dual-prong airplane adapter, while AirFly Pro’s included items list a USB-C charging cable, travel pouch, and keychain holder. For a standard 3.5mm audio jack, both are designed to transmit sound to Bluetooth headphones. For two listeners, both support simultaneous connections, but the PYYUWF’s numbered indicators may make the pairing status easier to identify at a glance.
My Verdict
I would choose Twelve South AirFly Pro for a flexible remote-work and travel audio setup. Its more-than-25-hour stated battery life, TX/RX modes, two-headphone support, and listed aptX codecs make it the more adaptable fit for switching between audio sources.
I would choose PYYUWF 5.4 instead if a dual-prong airplane adapter and clearly marked two-headphone indicators are the priority. Those are concrete advantages for someone whose main use is listening from airplane screens.
Yes. Both are listed as supporting two headphone connections at once. PYYUWF 5.4 has separate “1” and “2” indicators; AirFly Pro is described as remembering paired headphones for future reconnections.
AirFly Pro is listed with more than 25 hours of battery life. PYYUWF 5.4 is listed with 20 hours and a two-hour charging time.
Both have RX mode for receiving Bluetooth audio and sending it to a wired AUX system, such as a car stereo. Check that your system has the compatible AUX input.
Neither product’s listed specifications establish call-microphone quality or noise cancellation. They are Bluetooth audio adapters for connecting wired audio sources and systems, so choose one based on your connection needs rather than treating it as a call headset.
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