If you want an open-ear sports headphone with IP67 protection and a quick-charge option for a kid, choose mojawa Aerra IP67; if you need longer battery life and a dual-driver audio design, choose SHOKZ OpenRun Pro 2. Both leave the ears uncovered, but their feature priorities are different: Aerra emphasizes water protection and two-device pairing, while OpenRun Pro 2 offers a longer stated runtime and app-based EQ modes.
• mojawa Aerra IP67: IP67-rated, sweatproof open-ear design and a five-minute quick charge that adds 1.5 hours of playtime; its stated battery life is eight hours.
• SHOKZ OpenRun Pro 2: 12-hour battery life and a bone-conduction-plus-air-conduction driver setup; its listed water protection is IP55, below Aerra’s IP67 rating.
• Aerra also pairs with two devices at once and offers three sound modes; OpenRun Pro 2 uses the SHOKZ app for EQ modes.
• Choose Aerra if water protection, quick top-ups, or switching between two paired devices matters most.
• Choose OpenRun Pro 2 if longer listening time, its dual-driver arrangement, or its wind-resistant microphone design is the better fit.
Aerra is an open-ear bone-conduction headphone for people who want to listen without inserting earpieces into their ears. That can be useful on a run, bike ride, or walk when hearing surrounding activity matters. Its design also avoids the sensation of an earbud sitting inside the ear, which may appeal to someone planning to wear headphones through a longer workout.
The standout practical feature is IP67 protection. The product information describes a sealed, waterproof body intended to handle heavy sweat and getting caught in rain. That makes Aerra the more compelling choice of these two for wet workouts or unpredictable weather. It also offers eight hours of music and calls, plus a five-minute quick charge for an additional 1.5 hours of playtime. If charging tends to happen between activities rather than overnight, that quick top-up could be especially convenient.
Aerra’s Bluetooth 5.2 connection can pair with two devices simultaneously, a useful feature for someone who moves between a phone and another paired device. Three sound-effect modes—Equalizer, Bass Boost, and Vocal Enhancement—let the listener choose a different emphasis. The trade-off is straightforward: its stated battery life is shorter than the OpenRun Pro 2’s 12 hours. And while Aerra’s product information lists an adult, teen, and child age range, fit and suitability should still be considered for the specific wearer.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-20 · 7 min read · Independent comparison
Who should skip it: Skip Aerra if your main priority is the longer stated runtime or a dual bone-and-air-conduction driver system.
OpenRun Pro 2 also uses an open-ear design, aimed at listeners who want audio while remaining aware of what is around them. Its stated battery life is 12 hours, four hours longer than Aerra’s listed eight. For a long day of training, repeated commutes, or multiple workouts between charges, that difference may matter more than Aerra’s faster quick-charge feature.
Its audio system combines bone conduction for the highs with air conduction for deeper bass. That is a meaningful design difference, not just a different set of sound modes. SHOKZ also provides EQ modes through its app, including a Classic Mode for bone-conduction sound and a Volume Boost Mode intended for noisy environments. Buyers who like having options for adjusting the sound profile may prefer this approach, though the app-based controls are a different routine from Aerra’s listed three modes.
For calls, OpenRun Pro 2 has two wind-resistant microphones and an AI noise-reduction algorithm. The product information says the system is designed to reduce background noise, including wind at speeds up to 15 miles per hour. Its listed protection is IP55, so it offers less water protection on paper than Aerra’s IP67 rating. The frame incorporates a nickel-titanium alloy memory wire and ergonomic ear hooks, with a design intended to stay secure during activities such as gym sessions and cycling.
Who should skip it: Skip OpenRun Pro 2 if IP67-level water protection or simultaneous pairing with two devices is essential to your decision.
• Best for longer stated battery life → SHOKZ OpenRun Pro 2. Its listed 12 hours exceeds Aerra’s eight hours. That gives it the edge when charging opportunities may be limited.
• Best for a fast battery top-up → mojawa Aerra IP67. A five-minute charge is listed as adding 1.5 hours of playtime, a handy detail for a last-minute workout.
• Best for stronger stated water protection → mojawa Aerra IP67. Its IP67 rating is higher than OpenRun Pro 2’s IP55 rating, making Aerra the more suitable option to consider for heavy sweat or rain.
• Best for dual-device pairing → mojawa Aerra IP67. Its feature list explicitly supports pairing with two devices at once. That is useful if you regularly switch between two sources.
• Best for a dual-driver design → SHOKZ OpenRun Pro 2. It combines bone conduction and air conduction, while Aerra’s listed driver type is bone conduction.
• Best for wind-focused call features → SHOKZ OpenRun Pro 2. Its two wind-resistant microphones and AI noise-reduction system are specifically described for calls in noisy or breezy conditions.
• Best for choosing between listed sound modes → mojawa Aerra IP67. It has Equalizer, Bass Boost, and Vocal Enhancement modes. OpenRun Pro 2 instead offers EQ modes through the SHOKZ app.
• Best open-ear option to consider for a kid → mojawa Aerra IP67. Its listed age range includes children, as well as teens and adults. That does not replace checking comfort and fit for the individual wearer.
Buying Considerations
Think first about where the headphones will be used. For runs and rides near other people or traffic, both models’ open-ear designs are intended to leave the ears uncovered. Neither should be treated as a way to block surrounding sound. If you are choosing for a kid, the open-ear format may be a practical consideration, but the fit still needs to be comfortable and secure for that child.
Water protection is another clear dividing line. Aerra’s IP67 rating makes it the stronger paper choice for wet or sweaty use. OpenRun Pro 2 is rated IP55, which is still a stated protection rating but not the same level. Neither rating should be stretched into claims beyond the product information.
Finally, consider the kind of listening and calling features you will actually use. Aerra supports two simultaneous device connections and gives three named sound modes. OpenRun Pro 2’s dual-driver layout and app-based EQ may appeal if you want its particular audio setup and adjustment options. If you are searching for “bluetooth bluetooth headphones ipx8,” neither of these models is listed as IPX8: Aerra is IP67 and SHOKZ is IP55. Likewise, neither product is described as a headband-style headphone, so shoppers looking for the best headband headphones for gym should note that both are open-ear designs instead.
I’d choose the mojawa Aerra IP67 for a kid, particularly when open-ear listening, IP67 protection, and two-device pairing are the priorities. Its eight-hour battery life is shorter, but the five-minute quick-charge feature is a practical counterpoint.
If I were choosing primarily for longer listening sessions, I’d lean toward SHOKZ OpenRun Pro 2 and its 12-hour stated battery life.
For my overall pick in this comparison, though, Aerra’s water protection and quick top-up make it the more useful fit for the kid-focused use case.
SHOKZ OpenRun Pro 2 lists a 12-hour battery life, compared with eight hours for mojawa Aerra IP67. Aerra, however, lists a five-minute quick charge that adds 1.5 hours of playtime.
No IPX8 rating is listed for either model. Aerra is listed as IP67, while OpenRun Pro 2 is listed as IP55.
OpenRun Pro 2 lists two wind-resistant microphones and an AI noise-reduction algorithm designed to reduce background noise, including wind. Aerra also lists microphones for calls, but the available product information does not give an equivalent wind-specific call detail.
Aerra has the higher stated protection rating: IP67, compared with IP55 for OpenRun Pro 2. Based on those listed ratings, Aerra is the more compelling pick for heavy sweat or rainy conditions.
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