Independent AK4332 DAC | IPX4 water resistance | 4 physical buttons

DLC diaphragm with PU gasket | High-end QCC5141 Bluetooth chip

1 Dynamic 2 BA drivers per ear | 10mm large dynamic driver

Supports high-res Bluetooth formats like LHDC/aptX Adaptive

2 high frequency BA drivers

Fully Integrated HiFi TWS Earbuds

Note: The product layout is for reference only. All products shall prevail.

*Pictures are for reference only.The actual product may vary.

Carefully-tuned sound

Pleasing frequency response curve

As the first TWS earphones fully developed by FiiO, for the FW5 we did not put our focus on features such as active noise cancelling (ANC). Instead, we focused on bringing the ultimate in sound quality in a fully integrated TWS earphone. And while it is easy to adjust the frequency response curve via DSP, we chose not to do so. We instead chose to refine the physical design of the unit to reduce distortion, retain the unique sound of the drivers – to maximize the sound quality through good design to fully respect the original music.



                                               Chief IEM R&D Engineer

For high frequencies, Knowles BA drivers are used for each channel. These BA drivers are placed in the sound tube near the ear to reduce high-frequency loss as sound waves travel to the listener’s ear. This design ensures that even tones like those at 16kHz still come through clearly. This design allows the FW5 to feature an airy, exceptionally detailed treble that captures every nuance of your music.

For every last detail

Knowles high-frequency BA drivers

The best of all worlds

Fully integrated HiFi TWS solution

The FW5 integrates FiiO’s various cutting-edge technologies to bring a fully integrated, high-fidelity true wireless solution. This is among the first TWS earphones to integrate a high-end Bluetooth chip, high-performance DAC, and a meticulously designed audio circuit to achieve a big quality jump in all aspects. Let the FWS show you what new high-fidelity TWS earphones are truly capable of.




* FiiO FW5 was granted the Japan VGP 2023 award. VGP (Visual Grand Prix) is an authoritative comprehensive award for audio-visual devices, which is of great reference significance to the consumer electronics industry.

Fun without worries!

IPX4 water resistance

The FW5 features IPX4 water resistance thanks to cleverly placed films and meshes. A 0.02mm water-resistant film is placed in the gap between the buttons and the shell to not only prevent water from getting in but to also ensure good feel when pressing the buttons. A custom water-resistant and sound-permeable mesh covers the sound nozzle an microphone openings to both prevent water from getting in but also letting sound through at the same time. With the FW5, you can go about life’s joys without worrying about damaging your great-sounding pair of earphones. 

Despite packing a high-performance DAC chip, high-end Bluetooth chip, and a carefully designed audio circuit, the FW5 features battery long enough to easily meet daily usage needs. With its large built-in 65mAh battery, the FW5 can be used for up to 7 hours on a single charge. The 380mAh charging case allows for total battery life of more than 21 hours.

A reassuring partner

21+ hours battery life

Based on user feedback from the UTWS Bluetooth series, the development team chose to employ 2 physical buttons per ear unit for operation. The 2 physical buttons make it easier to control play and pause of the current track compared to the traditional 1-button setup. In addition, the 2 buttons are placed perpendicularly to the wearing angle making them easier to press without resorting to too much force.

Easy to use with 0 accidental touches

4 physical buttons

Inside the FW5 are multiple major complex components that need to work together, of which signal transmission is arguably one of the most important. FiiO’s engineers cleverly made use of the FW5’s relatively large surface area of the outer cover and attached an FPC antenna to the inner side of the cover, which greatly improves signal transmission and reception performance. Also, to maintain an attractive look without sacrificing antenna performance, the outer cover is made through a combination of laser-etching + vacuum plating which ensures the FW5 still feels luxuriously metallic. 

Stable signals

Cover-embedded FPC antenna

The FW5 has been developed by the same FiiO R&D team that created the high-fidelity wired FH9 flagship. In the tiny space of a true wireless earphone, the team managed to fit a large 10mm dynamic driver that handles the low and mid-range frequencies, while higher frequencies are reproduced by 2 Knowles BA drivers. These drivers work together to give powerful yet textured bass while reproducing every last detail in the treble.

Acoustic goodness

One ear at a time

For true wireless earphones, the Bluetooth chip is undoubtedly one of the most important parts. The FW5 employs the high-end Qualcomm  QCC5141 that supports Bluetooth 5.2  for stable and high-performance Bluetooth audio thanks to the chip’s dual DSP and dual-core architecture. Additionally, the FW5 is Snapdragon Sound certified as a testament to its highly capable audio abilities.

More throughput

Qualcomm QCC5141 Bluetooth chip

More than just big

10mm large dynamic driver

The FW5 features a large 10mm dynamic driver for the low and mid frequencies. The driver has been designed specifically to maximize the sound quality from its N50 neodymium magnets. These N50 magnets, with their high magnetic density, allow for better dynamics and make the sound stage more grand for a thoroughly bold sound.

The FW5 reaffirms FiiO’s commitment to being at the forefront of new audio technologies, with not only Snapdragon Sound certification but also support for LHDC/aptX Adaptive for the ultimate quality in true wireless audio. This support ensures both a massive upgrade in the sending and receiving of high-quality wireless audio and a major improvement in compatibility with various devices.

HiFi TWS is the new thing

High-Res LHDC/aptX Adaptive Bluetooth format support


The FW5 uses PU as the material of choice for the gasket surrounding the diaphragm of the dynamic driver, since its flexibility and high damping coefficient allow for lusher vocals and faster transient response. The diaphragm of the dynamic driver is made of DLC, which features favorable properties such as high rigidity and light weight which allow for less unwanted breakup over the dynamic driver. This leads to reduced non-linear distortion and ultimately better resolution.

Bringing out the big guns

DLC diaphragm with PU gasket

“Box” switch

Power switch linked to the case

When opening the FW5 charging case, the ear units are automatically turned on and paired with the last device. When the ear units are placed back into the charging case, the FW5 ear units automatically turn off to save power.


* When the charging case is out of power, this functionality is not supported

Both the charging case and the FW5 ear units each feature LED indicator lights to let you quickly know their status. The 4 indicator lights on the charging case not only indicate the battery remaining and the charging status, but also indicate if the ear units are in the case. The ear units each also contain a white indicator light that clearly indicates pairing and connection status.

Simply clear

LED indicator lights

Heartily robust

Independent AK4332 DAC

Let there be high fidelity in a true wireless earphone! The FW5 contains an efficient AKM VELVET SOUND DAC – the AK4332 which features high-performance decoding abilities. This chip is capable of  signal-to- noise ratio up to 106dB, distortion as low as -96dB, and dynamic range up to 102dB.


*The above parameters were measured values of the FW5’s internal circuit.

Each ear unit of the FW5 features 2 microphones that work together with cVc noise cancellation technology for clearer voice calls to make communicating a joy.

Enjoy communicating

Dual-mic cVc noise cancellation

The FW5 comes standard with a set of balanced ear tips as well as 2 alternate sets of vocal ear tips for different sound preferences. The vocal ear tips are made with medical-grade silicone featuring a soft texture that makes it comfortable to wear – making them a perfect combination of sound quality and superior comfort.

Multiple flavors in one place

2 sets of ear tips included

FW5 earbud×1pair; Charging case×1; Quick start guide×1; USB charging cable × 1 HS18 ear tips (S/M/L)×1set; Cleaning brush×1; Balanced ear tips (S/M/L)×1set; Warranty card×1.

Abundant accessories

Model: FW5

Configuration: QCC5141+AK4332

Acoustic  setup: 1 Dynamic 2 BA

BA drivers: Knowles RAD

Dynamic driver: 10mm DLC diaphragm + PU gasket

Bluetooth: 5.2

Frequency response: 20-20kHz

Sensitivity: 108dB/mW(@1kHz)

Impedance: 32Ω±20%(@1kHz)

Charging time: For charging case about 1h40min

Battery life: About 7h (ear unit) +14h (charging case)

Battery capacity: Ear unit: 65mAh;

Charging case: 380mAh Ear unit weight: About 6.4g

Total weight: About 57.2g

Ear unit dimensions: About 28.4×22.9×22.6mm

Charging case dimensions: About 68.4×43.9×32.3mm

Better sound quality

Comes from the independent volume control system

The circuit of the FW5 continued the design concept of DAC and headphone amplifiers which feature an independent volume control system. There are 32 volume levels, allowing for a more precise adjustment. When connecting the FW5 to the mobile phone (transmitter), it is suggested to set the volume of the phone (transmitter) to the maximum level, and adjust the volume through the FW5, so we can acquire complete audio dynamics from the Bluetooth transmission process and better sound quality.

Connect to two devices simultaneously via Bluetooth

Switch to either device you want

The FW5 can be connected to two mobile phones at the same time. Just pause music on one of the mobile phones, and freely switch to the other one to listen to music or answer a call.

10-band PEQ precise tuning

Born for good sound

The PEQ (Parametric Equalizer) function was designed for the FW5, which supports 10-band self-defined tuning. On the FiiO Music App or the FiiO Control App, users can self adjust the frequency, gain level, Q value, etc., achieving more accurate frequency response among every frequency range while ensuring high-fidelity sound quality. Also, it supports up to 192kHz/24bit under PEQ style.