SWOFY M4 MP3 Player, 128 GB, 2.4-inch, Bluetooth 5.4

SWOFY M4 is a portable music player with 128 GB of listed storage, a 2.4-inch screen, Bluetooth, FM radio, and a built-in speaker. It also lists e-book reading, photo viewing, video playback that requires conversion, an alarm, and a stopwatch, making it suited to offline listening with a few extra functions.

At a glance

Bluetooth 5.4 is listed for pairing with wireless headphones or speakers. The listing says it does not support car Bluetooth, PC, or cell phone connections.
Built-in speaker and 3.5 mm headphone jack provide speaker playback or wired listening. The listing claims wired headphones are included.
FM radio, e-book reading, photo viewing, video playback with conversion, alarm, and stopwatch are listed alongside music playback.
The player lists 128 GB of storage and claims support for a 512GB memory card.

Price

$45.99Save 20%

Reference price: ~~$57.69~~

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

The listed 128 GB storage offers room for an offline music library without relying on a streaming connection.
A built-in speaker, headphone jack, and Bluetooth provide several stated listening options.
The listed radio and utility functions add uses beyond playing stored music.

Technical specifications

18 specifications

Identity
Brand	SWOFY

Display and video
Screen size	2.4 inches
Screen resolution	240x320

Connectivity and controls
Wireless connection listed	Bluetooth
Bluetooth version	5.4
USB port	Typ C, USB2.0
Headphone jack	3.5 mm

Storage and media
Storage listed	128 GB
Expandable storage claim	512GB memory card
Supported standards	MP3
Audio formats	MP3/WAV/APE/WMA/FLAC/AAC-LC
Video format	AVI
Recording formats	MP3/WAV
Lyric format	LRC

Battery and charging
Battery	3.7 V/ 300mAh
Charging time	1-3 Hours

Physical details
Weight	2.75oz(78g)
Dimensions	2x2.8x0.38 inch (51.571.59.6 mm)

What to know before buying

Listing details to confirm

The listing details are inconsistent on supported audio formats: one feature claim names MP3, FLAC, WAV, and AAC, while the specification lists MP3/WAV/APE/WMA/FLAC/AAC-LC. It also gives storage expansion as a 512GB memory card without clarifying card type, and describes the screen as full touchscreen in one claim while the resolution is only stated in the specification. Confirm the exact selected listing and compatibility needs before buying. Video playback requires conversion. The listing excludes car Bluetooth, PC, and cell phone connections.

Who is it for?

A good fit for

Listeners wanting a dedicated offline music player with substantial listed onboard storage.
Buyers who want FM radio, speaker playback, or a headphone jack in a compact player.
People who may use the listed e-book, photo, alarm, or stopwatch functions in addition to music.

Less suited to

Buyers who need Bluetooth pairing with a car, PC, or cell phone, which the listing says is unsupported.
Shoppers who need video playback without first converting files.
Anyone who needs confirmed audio-format or memory-card compatibility before purchase.

SWOFY M4 MP3 Player, 128 GB, 2.4-inch, Bluetooth 5.4 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 49 ratings

5 stars77%77%
4 stars17%17%
3 stars6%6%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings but no customer-comment summary, so it does not establish specific praised features or complaints. The rating distribution leans toward higher star categories, with some three-star ratings, but it cannot show why customers rated the player that way or whether its storage, connectivity, and listed functions meet a particular buyer's needs.

Frequently asked questions

How much storage does the SWOFY M4 list?

The product details list 128 GB of storage. The listing also claims support for a 512GB memory card, but does not specify the card type.

Can it connect to a car or phone over Bluetooth?

The listing says Bluetooth pairing is for wireless headphones or speakers and does not support car Bluetooth, PC, or cell phone connections.

Can it play video files directly?

Video playback is listed, and the product description says video conversion is required. The specification lists AVI as the video format.

What listening options are listed?

The listing describes a built-in speaker, a 3.5 mm headphone jack, Bluetooth, and included wired headphones. It does not establish which wireless devices are compatible.