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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want long wireless playtime and a folding over-ear design for travel, choose JOMILIN B9; if you need a pocket-sized player that stores your own music files on a memory card, choose SUNGOOYUE MP3. These are two very different products that happen to both play audio, and the right one depends entirely on how you listen.
• JOMILIN B9 biggest strength: 60 hours of playtime per charge, Bluetooth 5.3, and a folding over-ear build with a wired 3.5 mm fallback.
• JOMILIN B9 biggest trade-off: It is a headphone only — there is no screen, no storage and no way to play files without a paired device or a cable.
• SUNGOOYUE MP3 biggest strength: A slim aluminum alloy body with a 1.8-inch LCD, support for memory cards up to 64GB and lossless formats like FLAC and APE.
• SUNGOOYUE MP3 biggest trade-off: Just 8 hours of playback per charge, and the memory card is not included, so you supply your own storage and files.
• Pick the JOMILIN B9 if you stream from a phone, tablet or PC and want comfort and battery life above all.
• Pick the SUNGOOYUE MP3 if you want a tiny standalone player for running, walking or sport, with your own music library loaded on a card.
The JOMILIN B9 is built around one idea: keep the music going for as long as possible. A 60-hour average battery life on a 2-hour charge is the headline number here, and it is the sort of figure that matters on a long flight, a multi-day trip or a week of commuting where you would rather not think about charging. Dual 40mm drivers cover a 20 Hz to 20,000 Hz range, and the brand positions the tuning around deep bass with a balanced mid and high range rather than a flat, analytical sound.
On the control side, the B9 offers volume control with a touch method, built-in microphone for hands-free calls, and sound isolation rather than active noise cancellation. It ships in Rose Gold with a plastic enclosure and a one-year warranty. If you mostly listen from a phone or laptop, take calls, and want a set you can fold and forget, this is the one. Skip it if you want a self-contained player, since it has no storage and no screen of its own.
SUNGOOYUE MP3: Who It's For
The SUNGOOYUE MP3 is the opposite philosophy: a tiny, self-contained music player that does not need a phone at all. The 1.8-inch LCD screen sits in a slim aluminum alloy shell, and the device supports memory cards up to 64GB — though the card itself is not included, so budget for one separately. Format support is broad: MP3, WMA, FLAC, APE, AAC, OGG and ACELP, which means lossless files are on the menu if you care about that. The brand notes original memory cards are recommended for best performance.
Daily use is straightforward. You can build playlists, pick songs directly, and use random or repeat playback, plus a sleep timer for winding down at night. There is a voice recorder built in and a headphone included in the box, along with a charging cable. Battery life averages 8 hours with a 2-hour charge — modest next to the JOMILIN, but plenty for a run, a gym session or a day of walking. It comes in Pink.
This player suits runners, walkers and anyone who wants to leave their phone behind and carry a small dedicated device instead. Skip it if you expect long battery life between charges, or if you would rather stream than manage a local library of files.
Side-by-Side: Which Should You Choose?
• Best for a standalone player → SUNGOOYUE MP3. It holds up to 64GB of your own files and needs no phone or computer to play them.
• Best for streaming from a phone, tablet or PC → JOMILIN B9. Bluetooth 5.3 with a 10-meter range keeps the connection to your existing devices.
• Best for running and sport → SUNGOOYUE MP3. A slim aluminum body with a 1.8-inch screen and an included headphone is made to be carried, not worn over the ears.
• Best for calls → JOMILIN B9. The built-in microphone and hands-free function handle incoming calls; the SUNGOOYUE is a music and voice-recorder device.
• Best for lossless file support → SUNGOOYUE MP3. FLAC, APE, AAC, OGG and WMA cover formats the B9 simply has no way to play on its own.
• Best for travel comfort → JOMILIN B9. Memory-protein earcups, a folding frame and 7.01 ounces make it the more comfortable long-haul option.
• Best for wired backup → JOMILIN B9. The 3.5 mm jack lets you keep listening when the battery is empty; the SUNGOOYUE relies on its own charge.
In my opinion, the JOMILIN B9 is the better buy for most people, because 60 hours of playtime, Bluetooth 5.3, a folding over-ear design and a wired fallback cover the widest range of everyday listening. I would only steer you to the SUNGOOYUE MP3 if you specifically want a phone-free player with your own files on a card and you accept the 8-hour battery and the extra cost of a memory card. If battery life and comfort are your priorities, get the B9. If portability and lossless playback are, get the SUNGOOYUE.
FAQ
How to connect mobile headphones
How to connect c port headphones
Neither the JOMILIN B9 nor the SUNGOOYUE MP3 lists a USB-C audio connection in its specs, so this is not a feature either product claims. The B9 connects by Bluetooth or a 3.5 mm jack; the SUNGOOYUE uses Bluetooth and ships with a charging cable and a headphone.
How to use external headphones on mac
Pair the JOMILIN B9 to your Mac over Bluetooth 5.3, or connect it with the 3.5 mm cable — both are listed connection methods for the B9. The SUNGOOYUE MP3 is a standalone player, so it does not act as headphones for a computer.
How to pack headphones
The JOMILIN B9 folds multiple times into a compact shape for a travel bag, which is the practical way to pack it. The SUNGOOYUE MP3 is a small aluminum player, so it simply goes in a pocket or a side pouch with its cable.
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