TWS true wireless earphones - $50 to $100
FOUR STARS - The Earfun OpenJump sounds excellent and has a ton of great features, but its design may be too tricky for runs or challenging workouts.
Bluetooth 5.3 with AAC and LDAC codec
IPX7 waterproof rating (heavy rain, shower and sweat proof)
11 hours playtime on a single charge
Charging case can charge earpieces fully 3 times
Has: App support, multipoint connection, spatial audio
Doesn't have: wireless charging, ANC
Comes with USB-C cable and English manual
$80 - See price on Amazon US or your Amazon country
In and underneath this Earfun OpenJump review, you will find comparisons of the Earfun OpenJump vs Acefast Acefit Air. It's also my first review with a dedicated Sports Test!
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Design, comfort and battery life
The Earfun OpenJump has a large slab or charging case that houses the earbuds. It's not too thick or chunky, but still a bit too big to carry comfortably in a jeans pocket.
The earbuds themselves look better than the scratch-happy charging case. The visible earpiece has a neat looking combination of grey and metallic elements - it doesn't look too cheap. The rest of the design is black and made from a rubber that doesn't annoy.
The OpenJump has a compact, round earpiece that leans somewhere against or near your inner ear. It then has a soft and very flexible bridge over your ears, which ends up in a heavier stem you put behind your ears.
It's very comfortable to wear, and that's a good thing, because you can for hours on end, thanks to its massive 11 hours battery life.
The earbuds also wear an IPX7 waterproof rating, meaning they can withstand sweat, heavy rain and even a shower.
The case of the Earfun OpenJump is too chunky and a scratch-magnet at that, but its 11 hours battery life and IPX7 waterproof rating are outstanding.
sports test of Earfun OpenJump
As comfortable as the OpenJump is, its fit is not as suited for all kinds of sports.
Due to the very flexible bridges, the speaker part can bounce against your ear when you run with them.
For me personally, this bouncing is more annoying than the thumping in-ears can sometimes give when running. After running 3 miles, I felt a constant need to readjust the earbuds, and even take them off my ears completely.
To ensure this bouncing isn’t just a personal matter, I asked four friends to wear and test these too - just like I did with clip-on earbuds around 50 dollars and clip on-earbuds around 25 dollars.
The results were… not good. A friend also noticed the earpiece bouncing against the ear, and two other friends stated the fit felt too loose to use them during workouts like climbing or fitness.
They do withstand wind noise well. You can hear wind noise with a metallic edge, but it doesn't interfere with your music too much.
Earfun OpenJump sports performance for:
Running: Speaker bounces too much against your head
Working out / climbing: Fit is too loose to feel safe
Cycling: Great comfort, blocks wind noise well enough
The Earfun OpenJump are comfortable for cycling, but have a suboptimal fit for other types of sports.
Controls, connectivity and app support
While sports earbuds may not have to, the OpenJump comes with dual-device multipoint connection, meaning you can connect it to two devices at the same time. Switching is done by receiving a phone call, or pausing on one device and playing on the other.
Standard Bluetooth connectivity is good too - with a reliable Bluetooth connection up to around 10 meters away from your device(s).
The Earfun responds very quickly to your input. The entire round part of the earpiece is touch-sensitive, causing you to quickly increase or decrease the volume (single tap) or play/ pause (double-tap) by accident. Happily, you can deactivate certain controls in the Earfun app.
The Earfun app for iPhone and Android brings some useful features to these earbuds:
Change the controls completely to your liking
Disable controls
(De)activate the Gaming Mode
(De)activate the Theater Mode for a wider sound
Choose from a dozen equalizer presets
Manage your connected devices
Choose between a more stable connection, or the LDAC codec
(De)activate auto shutdown timers
Update the firmware
For sports purposed, actual buttons could have been a better choice than touch panels; these can be harder to operate with a sweaty finger.
Multipoint connection, volume controls and multiple good app options: The Earfun OpenJump absolutely doesn't back down on features.
Phone and video calls
Getting a call while you're running? That shouldn't be a problem.
The microphones of the Earfun OpenJump pick up your voice loud and clear, in a natural manner too.
Even when there's quite a bit of noise in the background - like chatter or heavy traffic - your voice rises above it.
The Earfun even handles a bit of wind noise well, although your voice may lose its clarity every now and then.
The Earfun Open Jump delivers surprisingly good call quality, both indoors and outside.
Video and games playback
Playing videos with the Earfun OpenJump is a flawless experience, with lipsync performance in YouTube and other streaming services on both iPhone and Android phones.
We're not running out of surprises here: these earbuds are also great for gaming. With the Gaming mode you can either activate from the app or the earbuds directly, the sound synchronizes fluently with the action on your screen.
Turn on the Theater mode from the app, and it gets even better: it lets you hear where footsteps, gunshots and explosions are taking place in a demanding game like Call of Duty mobile.
The Theater mode is also great for increasing immersion in Hollywood blockbusters or shows.
The Gaming mode + Theater mode combination was great on the Earfun Air 2 NC, and continues to impress here.
Sound quality of Earfun OpenJump
Earfun proves you can squeeze great sound out of speakers that are still millimeters away from ear canal.
As almost all clip-on earbuds for $50 and clip-on earbuds for $25 have proved before: it's hard to get the sound of outer-ear speakers right.
But… what the SoundPEATS PearlClip Pro did for clip-ons, the Earfun OpenJump does for open earbuds. This is a highly entertaining listen.
The mid-bass isn't very impressive by itself. So far away from your ear canal, the mid-bass consists of a gentle slam at best.
It compensates for it with fulness in the overall lows. Lower mid-tones are boosted, and provide the music with warmth and smoothness.
Center mid-tones like guitar and piano play sound natural - not too recessed, not too warm or bright.
Vocal reproduction is excellent as well. Both female and male vocals show dynamics, diving into the lows as easy as reaching into the highs. Even Björk's sharp, squeaky outhauls in It's Oh So Quiet are kept in control: highs roll off before they become sharp.
Perhaps the most impressive part of the music, is the detail retrieval. Music feels airy and details clearly come from your left and right. In higher quality recordings, it can even be possible to pinpoint certain instruments to a position.
You can even further increase the air in the sound with the Theater mode from the app.
The Theater mode does boost treble too, however, and this can be tricky on the highest volumes: the highs can than overrule the lows a bit - just like on the Earfun Air Pro 4.
Returning to the regular mode from the Theater mode is all but a punishment: the increase of the OpenJump's smooth lows can fee like a treat.
The described performance is the performance with the default AAC codec. Android-users can switch to the LDAC codec sound too, but as this decreases battery life, connection strength, video synchronization and turns off the multipoint functionality, I don't recommend it.
A sound that convinces with smoothness, detail, and balances perfectly between warmth and clarity… on a speaker that rests against your ears! A remarkable achievement, and more importantly: a great listen.
—> These are the best sounding wireless earbuds from $25 to $100
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Earfun OpenJump comparisons
Earfun OpenJump vs SoundPEATS PEarlClip Pro
Doubting between open-ear earphones or clip-on earbuds? The SoundPEATS PearlClip Pro is hands-down the best option in the clip-on category. How does it stack up?
The Earfun and SoundPEATS have something in common: they're highly comfortable to use for everyday tasks, but may have a fit that's a bit too loose for runs and workouts.
Both are super well equipped for everyday all-around usage, though. Both have multipoint connection and deliver clear calls.
The Earfun is even better on all other parts, though. It delivers 11 hours instead of 6 hours playtime on a single charge, boasts an IPX7 waterproof rating instead of an IPX5 rating, and offers a more immersive gaming mode as well. That's mostly because it sounds better too. The sound feels more around you, has more separation and detail, and a more pleasantly tuned treble too.
If it's your thing, the jewel-like design from the SoundPEATS PearlClip Pro may be more appealing, but for the rest, the Earfun takes the cake.
$60 to $90 - See price on Amazon US or your Amazon country
Earfun OpenJump vs Earfun Air Pro 4
So, how does the Earfun OpenJump actually fare against my top $100 recommendation, the Earfun Air Pro 4?
Of course, you can't really compare these. But I'll still do. The OpenJump plays 3 hours more on a single charge, and is more comfortable to wear. The Air Pro 4 strikes back with some of the strongest Active Noise Cancelling on sub-$100 earbuds.
Both models have excellent call clarity, but the OpenJump takes the lead with its gaming mode, that places the action more precisely around you.
In music, then? While the airiness of the OpenJump is wonderful, separation and placement on the Air Pro 4's are impressive too. Its even easier to pickup details like guitar string-plucking and breath grasps on the Air Pro 4, and the Air Pro 4 also produces a much stronger and deeper, more impactful bass - simply from the fact these go into your ears. If you're up for a cleaner bass, the OpenJump may actually suit you better.
Around $80 on Amazon US or your Amazon country
Earfun OpenJump vs Acefast Acefit Air
The yet unreviewed Acefast Acefit Air is likely a better choice for your runs and workouts than the Earfun OpenJump.
The Acefast comes in a more stylish and flatter charging case, but the true win is in the earbuds itself. Acefit's larger earpieces make the fit more stable. They don't bounce against my ears in runs, and friends also state the fit is more reliable.
Just like the Earfun, the Acefast sounds good - although its treble can be a bit sharper on high volumes, and there's slight sibilance (lasting sss-tones) in vocals and cymbals. The Earfun sounds warmer, smoother and more engaging.
In all other aspects, the Earfun wins. It has clearer phone calls, a better synchronizing and more immersive gaming mode, and more reliable controls.
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$60 - $120 - See price on Amazon US or your Amazon country
Verdict: Earfun OpenJump
This is crazy. The Earfun OpenJump has outstanding battery life, excellent app support, clear calls, a fantastic gaming mode and great sound…
… but it's less great for what it intends to do. The OpenJump fit may be too tricky or loose for runs, sports and workouts.
Ultimately, these may not be the sports earbuds you’r looking for, but these could still be great when you're looking for earbuds you can comfortably wear all day.
FOUR stars - Good
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I recieved the Earfun OpenJump from the manufacturer to test and review. My reviews are 100% independent and non-commercial - read about it here.
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