If you want a Bluetooth adapter for using your own headphones with wired audio sources, choose Twelve South AirFly Pro; if you need a sleep mask with built-in headphones for rest and travel, choose MUSICOZY 5.4. For teachers, AirFly Pro is the more practical fit when a class, trip, or workout involves a 3.5 mm audio jack; MUSICOZY is for winding down with audio while blocking out light.
• Twelve South AirFly Pro’s biggest strength: It sends audio from a 3.5 mm jack to Bluetooth headphones and can also receive Bluetooth audio for a wired speaker or AUX system. Its trade-off: it is an adapter, not a pair of headphones, so you need your own listening gear.
• MUSICOZY 5.4’s biggest strength: It combines a sleep mask and flat, built-in speakers in a wraparound design intended for side sleepers. Its trade-off: it is designed for close, personal listening and rest, not for connecting headphones to a wired entertainment system.
• AirFly Pro offers over 25 hours of stated battery life and can pair with two sets of headphones at once. MUSICOZY states over 14 hours of playtime and includes a built-in microphone for calls.
• AirFly Pro uses Bluetooth 5.0 and supports aptX Low Latency, aptX, and SBC. MUSICOZY uses Bluetooth 5.4 and is made with a bamboo fiber, cotton, and spandex blend.
• Choose AirFly Pro if you already own Bluetooth headphones and want more ways to use them with wired audio. Choose MUSICOZY 5.4 if you want a sleep mask with audio for naps, meditation, or side-sleeping.
AirFly Pro solves a specific problem: how to listen wirelessly when the audio source has a 3.5 mm output. Connect it to an airplane entertainment jack, compatible gym equipment, a TV, or another wired audio source, then pair it with your Bluetooth headphones. It also works in the opposite direction, receiving Bluetooth audio from a phone or tablet and sending it to a wired speaker or AUX input.
That transmit-and-receive flexibility makes it more than a travel-only accessory. A teacher who already has Bluetooth headphones could use it with a compatible wired audio source at school, while travelers can bring their own headphones for in-flight entertainment. It can connect to two sets of headphones simultaneously, which is useful when two people want to listen to the same source. AirFly Pro remembers previously paired headphones for future reconnection.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-22 · 6 min read · Independent comparison
The stated battery life is over 25 hours, and it can be used while charging. Bluetooth 5.0 and support for aptX Low Latency, aptX, and SBC round out the feature set. The trade-off is straightforward: AirFly Pro does not supply headphones, and it is only helpful when the source has a suitable audio connection or you want to bridge Bluetooth and AUX devices. Skip it if you want an all-in-one sleep accessory or do not already have Bluetooth headphones or a wired audio system to connect.
MUSICOZY 5.4 is a Bluetooth sleep mask with thin speakers integrated into a fabric wrap. Its design is aimed at people who want audio without bulky over-ear headphones or earbuds pressing into their ears. The full-coverage form and flat speakers are particularly relevant for side sleepers, who may find traditional headphones uncomfortable when resting on a pillow.
The fabric is listed as 70% bamboo fiber, 25% cotton, and 5% spandex, and is described as soft and breathable. A quiet, adjustable hook-and-loop strap is intended to make fitting the mask less disruptive, while the removable module allows the mask to be washed. It also has a built-in microphone for hands-free calls. Those details suit relaxing with music, podcasts, or meditation audio during a nap, flight, or bedtime routine.
MUSICOZY states over 14 hours of playtime per charge and uses Bluetooth 5.4. Its central limitation is also its defining purpose: it is a wearable mask, not a flexible adapter for other audio equipment. It will not let you connect your own Bluetooth headphones to an airplane jack, and it is not a replacement for standalone headphones when you need an open, everyday listening setup. Choose it for rest and personal audio; skip it if your priority is source connectivity or sharing audio through separate headphones.
• Best for connecting Bluetooth headphones to airplane or other 3.5 mm audio → Twelve South AirFly Pro. It transmits audio from a wired headphone jack to wireless headphones.
• Best for sleeping on your side with audio → MUSICOZY 5.4. Its flat speakers and wraparound sleep-mask design are made with that use in mind.
• Best for battery life → Twelve South AirFly Pro. Its stated runtime is over 25 hours, compared with MUSICOZY’s stated over 14 hours.
• Best for sharing the same wired audio source with another listener → Twelve South AirFly Pro. It supports two headphone connections at once.
• Best for a built-in microphone for hands-free calls → MUSICOZY 5.4. The product information specifically lists a microphone.
• Best for sending phone audio to an AUX-equipped speaker → Twelve South AirFly Pro. Its receive mode takes Bluetooth audio and outputs it to a wired system.
• Best for a softer, fabric-based sleep accessory → MUSICOZY 5.4. Its mask combines bamboo fiber, cotton, and spandex and has a removable module for washing.
• Best for teachers choosing an accessory for wired media setups → Twelve South AirFly Pro. It fits the job if you have Bluetooth headphones and encounter compatible 3.5 mm audio sources; MUSICOZY is the better match for resting after the school day.
My Verdict
For teachers, that flexibility matters more than a sleep-specific design if the goal is to use existing Bluetooth headphones with wired equipment.
MUSICOZY 5.4 is the clearer choice for side sleepers who want a mask and audio in one wearable.
But if I were buying one of these for general travel and practical classroom-adjacent use, AirFly Pro would be my pick.
Yes. AirFly Pro sends audio from a compatible 3.5 mm source to Bluetooth headphones, including AirPods and other wireless headphones. It can also pair with two sets of headphones at the same time.
Its flat, ultra-thin speakers and wraparound sleep-mask design are specifically intended to make listening more comfortable for side sleepers. The mask also has an adjustable strap and a removable module for washing.
AirFly Pro lists over 25 hours of battery life, while MUSICOZY 5.4 lists over 14 hours of playtime under typical use. AirFly Pro can also operate while charging.
For connecting personal Bluetooth headphones to a compatible wired audio source, AirFly Pro is the more relevant option. MUSICOZY 5.4 is aimed at rest, naps, and sleep-mask listening rather than adapting wired equipment.
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