Here’s the thing—while most earbuds are all about sealing off the world and drowning you in your favorite tunes, there’s a new trend making waves: open-ear earbuds. One of the latest players in this space is the EarFun OpenJump, which has been getting much attention lately, especially because it packs some seriously impressive features for its price. We’re talking LDAC support for high-res audio, IP67 waterproofing so you can sweat or splash without worry, and a whopping 42 hours of total battery life. Plus, they’ve got customizable EQ settings and even a gaming mode if you’re into that kind of thing. All of this for under $70—or even less if you catch one of their early bird deals.
But here’s the real question: do they actually deliver? Sure, the specs look great on paper, but how do they feel when you’re wearing them for hours? Do they sound as good as they claim, or does the open-ear design hold them back? And what about those little extras, like call quality and comfort during workouts? I’ve spent some time with the EarFun OpenJump, putting them through their paces in everyday situations, and I’m ready to break it all down for you.
Design and Build Quality
The EarFun OpenJump earbuds bring a familiar and distinct design, especially for anyone who’s seen or used open-ear earbuds before. They borrow some visual cues from other popular models like the Soundcore AeroFit Pro or the Shokz OpenFit, but they carve out their own identity with a few thoughtful tweaks. The first thing you notice is how they’re built to wrap around your ears, not sit inside them. This open-ear concept isn’t new, but it’s still refreshing because it lets you stay aware of your surroundings while enjoying your music or podcasts.
The silicone hooks are flexible, soft, and designed to fit snugly over your ears. They feel comfortable right out of the box, and you don’t have to fiddle with adjustments to get them sitting right. Once you’ve got them on, they stay put without pinching or digging into your skin. That said, they aren’t adjustable in the way some other models are. If you’ve got larger or smaller ears than average, you might find the fit slightly less ideal, but for most people, they’ll sit exactly where they need to—right over the ear canal. It’s worth noting that the hooks aren’t as rigid as some competitors, which could be a downside if you’re looking for something super secure during intense workouts. But in everyday use, they hold up fine even with sudden head movements or jogs around the block.
The charging case is another story entirely. It’s chunky, no two ways about it. Compared to sleeker cases from brands like Apple or Samsung, this one feels downright bulky. It’s almost twice the size of what you’d expect, and it doesn’t slide easily into tight pockets. On the flip side, its weight is surprisingly manageable. At 72 grams, it doesn’t feel like a brick in your bag, and the smooth, matte finish gives it a premium vibe despite its size. Some might argue that the case has a slightly cheap feel when you handle it, but it’s sturdy enough to protect the earbuds.
Moving to the earbuds themselves, the build quality shines through. They’re lightweight at just 7.8 grams each, making them easy to forget you’re wearing after a while. The rubberized texture on the hooks adds a nice touch, giving them a grippy yet soft feel against your skin. The speaker portion sits neatly in front of your ear, angled toward the ear canal to project sound effectively. There’s no seal here, so don’t expect noise isolation, but the positioning ensures the audio reaches you clearly without blasting everyone nearby (unless you crank the volume way up).
Touch controls are integrated seamlessly into the design, with small bumps on the touch-sensitive areas to help you locate them without looking. The panels themselves respond well to taps and swipes, though the angle of the controls can take a bit of getting used to. You’ll need to approach them from the side rather than straight-on to register your inputs accurately. Once you figure that out, it becomes second nature.
One standout feature is the IP67 rating. These earbuds are dustproof and waterproof, meaning you can sweat buckets during a workout or get caught in the rain without worrying about damage. They’re not meant for swimming or showering, but they’ll survive splashes, heavy rain, and dusty environments just fine.
Connectivity
The EarFun OpenJump earbuds bring a lot to the table regarding connectivity, and they do so in a way that feels both modern and practical. First off, they’re packing Bluetooth 5.3, which is one of the latest versions of the tech. What does that mean for you? Well, it’s faster, more stable, and better at handling connections over longer distances compared to older Bluetooth versions.
One of the standout features here is multi-point connection support. This means you can pair the OpenJump with two devices at the same time. Imagine this: you’ve got your phone connected for music and your laptop linked up for work calls. If a call comes in while you’re jamming out, the earbuds will automatically switch over to your laptop without any hassle. It’s seamless and works exactly as it should. Just keep in mind that if you’re using LDAC—a high-quality audio codec—you won’t be able to use multi-point. That’s not unique to these earbuds; pretty much every device with LDAC has the same limitation. But hey, that’s a small trade-off if you’re chasing better sound quality.
Speaking of LDAC, it’s awesome to see this feature in a budget-friendly pair of earbuds. LDAC lets you stream high-resolution audio wirelessly, which is a big deal if you’re listening to lossless tracks or care about getting the most detail out of your music. Of course, LDAC only works on Android devices, so iPhone users are stuck with AAC or SBC codecs. Still, even without LDAC, the sound quality holds up well. And if you’re an Android user who loves audiophile-grade playback, this is a huge plus.
EarFun Audio app
Now let’s talk about the EarFun Audio app because it’s where a lot of the magic happens. The app itself is clean, intuitive, and doesn’t feel cluttered like some other companion apps I’ve used. Pairing the earbuds is straightforward—just pop them out of the case, turn on Bluetooth, and you’re good to go. Once they’re connected, the app gives you access to a ton of customization options. For starters, there’s a battery status display right at the top, showing you how much juice is left in each earbud and the charging case. No guessing games here—it’s all laid out clearly.
The app also lets you tweak controls however you want. By default, you get basic functions like play/pause, track skipping, volume adjustments, and voice assistant activation through taps and swipes. You can even disable certain controls entirely if you find yourself accidentally triggering them during workouts.
Another cool feature in the app is the equalizer (EQ). There are several presets to choose from, like Bass Boost, Pop, Rock, and more. Each one changes the sound profile noticeably, so you can pick what suits your mood or genre of choice. But the real star here is the custom EQ option. You can manually adjust sliders for bass, mids, and treble to dial in your perfect sound. It’s responsive too—you’ll hear changes in real-time as you move the sliders around. Even better, the app includes a “custom sound profile” tool. It plays tones at different frequencies and asks you to confirm when you can no longer hear them. Based on your input, it creates a personalized EQ curve designed to match your hearing. It’s a neat little trick, and honestly, it made a noticeable difference in clarity and balance for me.
There’s also a theater mode, which claims to create an immersive surround sound experience. In practice, it does widen the soundstage, giving the impression that sounds are coming from farther apart. It’s fun for movies or TV shows, but I wouldn’t recommend using it for music. The effect can make things sound a bit artificial, almost like you’re listening to a live recording with uneven mixing. Still, it’s nice to have the option if you’re into experimenting with spatial audio.
Gaming mode is another highlight worth mentioning. Activating it cuts down on latency, making these earbuds surprisingly usable for mobile gaming. Sure, they’re marketed as open-ear fitness buds, but having low-latency performance is always a bonus. Latency isn’t completely eliminated—even in gaming mode—but it’s low enough that you won’t feel frustrated while playing fast-paced games. Watching videos? No problem. The audio syncs perfectly with video playback.
Other handy features in the app include dual-device pairing toggles, automatic shutdown settings, and a “find my earbuds” function. If you misplace them, the app will make them beep loudly until you locate them. It’s simple but effective. Voice prompts are available too, and you can toggle them on or off depending on your preference. They’re helpful if you need reminders about battery levels or connection statuses, but they might annoy some people who prefer silence.
Sound Quality
The EarFun OpenJump earbuds bring a sound experience that’s a bit of a mixed bag, but in the best possible way. They’re not going to blow your socks off like some high-end in-ear buds, and honestly, that’s not what they’re designed to do. These are open-ear earbuds, so the sound profile is naturally going to be different. You won’t get that deep, rumbling bass or the kind of noise isolation that seals you off from the world. Instead, what you get is an open, airy sound that prioritizes awareness of your surroundings while still delivering decent audio quality. And for the price? It’s hard to complain.
First off, let’s talk about the drivers. These earbuds pack 14.2mm dynamic drivers, which is pretty impressive for their size. Larger drivers usually mean better sound reproduction, and in this case, they do a solid job. The bass, for example, has a noticeable punch thanks to something EarFun calls “Bass Surge.” It’s essentially a DSP (digital signal processor) inside the earbuds that boosts the low end. If you’re listening to genres like pop, hip-hop, or electronic music, you’ll definitely feel that kick. It’s not earth-shattering—don’t expect subwoofer-level thump—but it’s enough to make your music sound lively and engaging. That said, if you crank the volume too high, the bass can start to feel a little muddy. It’s not a dealbreaker, but it’s something to keep in mind if you’re the type who likes to push things to the max.
Now, when it comes to more complex genres like rock or metal, the OpenJump starts to show its limitations. The faster-paced drumming, layered guitars, and vocals can sometimes overwhelm the bass response. It’s not that the bass disappears entirely—it’s just not as strong or as fast as it needs to be to keep up with all those elements. If you’re a bass head, you might find yourself wishing for more oomph. But again, this isn’t unique to these earbuds. Most open-ear designs struggle with bass because there’s no seal in your ear canal to trap the sound. It’s just the nature of the beast.
The mids and highs, on the other hand, are where the OpenJump really shines. Vocals come through clear and crisp, making them great for podcasts, audiobooks, or even video calls. If you’re listening to acoustic tracks or anything with a lot of vocal emphasis, you’ll appreciate how natural everything sounds. The highs aren’t overly sharp or piercing, which is a big plus. Some earbuds in this price range tend to overdo it with the treble, leading to listener fatigue after a while. Not here. Even at higher volumes, the sound stays smooth and easy on the ears.
Noise leakage is something to be aware of, though. Since these are open-ear earbuds, sound naturally escapes. At moderate volumes, it’s not too bad, but if you crank it up, people nearby will definitely hear what you’re listening to. It’s not ideal if you’re in a quiet office or library, but for outdoor workouts or commutes, it’s less of an issue. Just be mindful of your surroundings and adjust accordingly.
The OpenJump also handles volume well. They can get surprisingly loud—almost too loud if you’re sensitive to higher volumes. I found myself comfortable at around 50-60% volume for most situations. Pushing them beyond that felt unnecessary and could lead to distortion, especially in the bass. But hey, having the option to go louder is always nice, especially if you’re in a noisy environment and need to drown out external sounds.
Microphone and Call Quality
The EarFun OpenJump earbuds come equipped with four microphones, which is a solid setup for handling calls and voice commands. Two mics on each earbud work together to capture your voice while trying to cancel out background noise using AI technology. On paper, that sounds promising—after all, more mics usually mean better performance, right? But in practice, the results are a bit of a mixed bag. Let’s break it down.
First off, the good news: the AI noise cancellation does a decent job in quieter environments. If you’re indoors, maybe sitting at your desk or chilling in a room without much going on around you, your voice comes through fairly clear. I tested this by recording myself talking in a quiet space, and while the audio wasn’t studio-quality by any stretch, it was clean enough for phone calls or video chats. You won’t sound like you’re speaking through a tin can, but don’t expect the kind of clarity you’d get from higher-end earbuds either.
Now, when things get noisy, the story changes a bit. The AI tries its best to filter out unwanted sounds, but it doesn’t always succeed. For example, I took the OpenJump outside during a windy day, and the wind noise was still pretty noticeable. It didn’t completely drown out my voice, but it was there in the background, making the call quality feel less polished. Same thing happened when I tested them near traffic or in crowded areas—the mics picked up some of the hustle and bustle, even though they tried to minimize it. That said, the AI does make a difference. Without it, I imagine the background noise would’ve been way worse. So while it’s not perfect, it’s definitely doing something to help.
Battery Life
The EarFun OpenJump earbuds bring some seriously impressive battery life to the table, and it’s one of those features that makes you stop and think, “Wait, these are under $70?” First off, the earbuds themselves last up to 11 hours on a single charge. That’s pretty solid, especially when you consider that most people aren’t going to be wearing them nonstop for that long. For context, 11 hours is enough to get you through a full workday with some time to spare. Even if you’re someone who listens to music or podcasts all day, you’re not going to run out of juice before you head home. And if you do crank the volume way up or use features like LDAC, gaming mode, or theater mode, the battery life will dip a bit—but not so much that it becomes a problem.
Now, when you factor in the charging case, things get even better. The case adds another 31 hours of battery life, bringing the total to 42 hours. That’s insane for earbuds in this price range. To put it into perspective, if you’re using these for an hour or two a day, you could go nearly two weeks without needing to charge the case. Even if you’re a heavy user, you’re still looking at several days of use before you have to plug them in again.
One feature that really stands out is the fast charging. If you’re in a rush and your earbuds are completely dead, just 10 minutes of charging gets you about two hours of playback. That’s clutch if you’re heading out the door and realize you forgot to charge them the night before. Speaking of charging, the case supports wireless charging, which is a nice bonus. Not every pair of budget earbuds offers this, so it’s worth mentioning.
Final thoughts
The EarFun OpenJump earbuds are a breath of fresh air in the growing world of open-ear audio. They’re not perfect, but they don’t need to be. What they do is deliver a solid, reliable experience at a price point that makes them hard to ignore. If you’ve been curious about open-ear earbuds but didn’t want to shell out big bucks for premium models like the Shokz OpenFit or Soundcore AeroFit Pro, the OpenJump steps in as a worthy alternative.
They may not have the flashiest design or the absolute best sound quality, but they check almost every box you’d want in a pair of budget-friendly open-ear earbuds. Comfortable fit? Check. Long battery life? Check. Decent sound and useful features like LDAC, gaming mode, and customizable controls? Check, check, and check. For under $70—and often much less with discounts—they’re an incredible value.
