EarFun OpenJump Review: Open-Ear Headphones with IPX7 Water Protection

Explore the features and performance of EarFun OpenJump open-ear headphones with robust IPX7 protection and long battery life.

The Rise of Open-Ear Headphones: Where Do EarFun OpenJump Fit?

Open-ear headphones have blossomed from niche gadgets to a vibrant, competitive category of audio gear. The market now clearly splits into two camps: fitness-focused models boasting rugged durability and extended battery life for active users, and lifestyle-oriented versions that prioritize sound quality and extra features.

EarFun OpenJump tries to straddle these two worlds. Officially in the latter category, they also pack fitness-friendly features, making them a curious contender. However, bad timing—a crowded launch alongside superior rivals—has dimmed the buzz they might otherwise have enjoyed.

As a longtime fan of EarFun’s reputation for affordable, quality audio, I approached the OpenJump with curiosity. Priced similarly to the Huawei FreeArc, which outshines them in many ways, and with the Honor Earbuds Open also stealing some spotlight, recommending EarFun’s offering is a challenge. Yet here we are, diving into what these headphones truly bring to the table.

Design and Build: Lightweight but a Bit Flimsy

At a glance, the OpenJump’s case looks like many other open-ear headphone cases—a medium-sized clamshell—but picking it up tells a different story. The plastic feels cheap and somewhat fragile, collecting scratches even after just two weeks of gentle use.

That said, the case performs its primary job well: storage and charging. It includes a USB-C port for power and a front LED indicator. The earbuds themselves follow the classic open-ear blueprint: drivers rest near the ear canal, held in place by sporty ear hooks, with a tiny battery housed behind the ear.

The fit is mostly comfortable, and I managed several runs and workouts without losing them. Still, occasional slight wobbling made me uneasy about them slipping off, unlike some rivals I’ve used that stayed rock solid.

Boasting an IPX7 rating, these headphones can survive immersion in water up to one meter for 30 minutes—no small feat compared to sports earbuds like the Beats Powerbeats Pro 2, which only offer splash resistance at IPX4.

The touch controls support single, double, triple taps, and long presses. While responsive, their sensor placement occasionally had me tapping my ear cartilage by mistake, making me switch to controlling playback via my phone or smartwatch.

Only available in black and weighing just 8 grams apiece, the OpenJump are light and never felt like a burden during use.

Design Rating: 3.5/5

Features That Stand Out: Battery Life and a Detailed Equalizer

The initial pairing process had some hiccups—my phone struggled to find the earbuds it had previously connected to, and the EarFun app stubbornly showed phantom profiles from failed attempts. After some persistence, connection stabilized and no further issues arose, but it’s worth noting.

Speaking of the app, EarFun Audio adds considerable value. Beyond firmware updates, it offers modes optimized for gaming and movies, customizable touch controls, and most importantly, a powerful equalizer.

The equalizer is a fan favorite with numerous presets, a 10-band manual mode, and a hearing test to create a personalized sound profile. The hearing test’s effectiveness is limited by the open-ear design, though—it’s tricky to tell when the test tones fade away versus ambient noise creeping in, unless you're in a soundproof bunker.

When it comes to endurance, the OpenJump shines. EarFun claims 11 hours of continuous playback from the earbuds alone, backed by a total of 42 hours including the case. My real-world testing even nudged this to nearly 44 hours. If battery longevity is your priority, these earbuds are highly competitive.

Features Rating: 4/5

Sound Quality: Decent, But Not Stellar

EarFun OpenJump launched during a tough moment, coinciding with two of the best-sounding open-ear headphones I’ve ever tested (more on those soon). Naturally, they fall short but not as dramatically as expected.

Open-ear headphones inherently struggle to deliver audiophile-level sound because drivers hover over the ears rather than sealing them off. The OpenJump don’t break this mold.

Their sound profile is assertive, but the music lacks punch and detail. Instruments blur together, the soundstage feels narrow, and the treble lacks sparkle in busy mixes.

The “Theater” mode attempts to widen the soundstage but ends up with a tinny, less satisfying tone. The ‘BassSurge’ feature provides a modest boost in some tracks but falls short of delivering rich, deep bass. Bass lovers might be better off with over-ear or in-ear models, though some competitors do better even within the open-ear format.

The 14.2 mm driver size is standard for this category, similar to models like the Nothing Ear (open).

Sound leakage is noticeable—again, par for open-ear headphones but slightly more pronounced here than on some others I’ve tested.

Sound Rating: 3/5

Price and Value: Competitive but Not a Clear Winner

Pricing the OpenJump at approximately $79.99 (around $80) makes them reasonable open-ear headphones, undercutting some pricier rivals, though they lack the finesse and soundcraft of higher-end models.

Of course, the market is crowded, and value depends heavily on your priorities and what alternatives you’re considering.

Value Rating: 4/5

EarFun OpenJump Ratings at a Glance

Alternatives to Consider

Huawei FreeArc

For the same price, the Huawei FreeArc delivers superior sound and a more premium-feeling case, though with shorter battery life and a clunky app. Overall, it’s my preferred pick.

Honor Earbuds Open

Slightly pricier, but with a sleek case, sound quality that outshines the OpenJump, and a more secure fit. Battery life is less impressive but overall a strong competitor.

Testing Experience: Two Weeks in Real Life

I wore the EarFun OpenJump for two weeks during everyday activities—at home, cycling in the city, running, and working out. Paired with a Realme smartphone, they handled music and podcasts across all these settings.

Having reviewed headphones for years, including other open-ear models and various EarFun products, this felt like a solid but unspectacular performance from the OpenJump.

“I see myself sticking with these until the next review pair arrives. They don’t annoy or disappoint, but they don’t excite either.”

Final Thoughts: Solid but Overshadowed

EarFun OpenJump is a competent set of open-ear headphones that excel in battery longevity and feature set but fall short on sound quality and refinement. If you spot them on sale, they become a bargain hard to ignore, but at full retail, the competition offers a more compelling package.

FAQ

• What level of water resistance do EarFun OpenJump headphones offer?
  EarFun OpenJump have an IPX7 rating, meaning they can withstand immersion in water up to 1 meter for 30 minutes.
• How long does the battery last on these headphones?
  The earbuds provide about 11 hours of playback, with up to 42 hours total including the charging case.
• Are the earbuds comfortable for sports and running?
  They fit mostly securely and are lightweight at 8 grams each, but occasional minor wobbling can occur during intense movement.
• Can I customize the sound on EarFun OpenJump?
  Yes, via the EarFun Audio app, you get a 10-band equalizer, presets, and a personalized hearing test.
• How does their sound quality compare to rivals?
  The sound is acceptable but lacks energy and detail compared to competitors like Huawei FreeArc and Honor Earbuds Open.

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