If you want wireless earbuds for swimming with deep bass and active noise cancellation to isolate your environment, choose QJF Earbuds; if you need voice assistant open ear headphones for swimming that prioritize situational awareness and real-time translation, choose KOUO Open Earbuds.
• QJF Earbuds: Delivers up to 60 hours of total playtime and features advanced Active Noise Cancellation (ANC) with a dedicated touch screen on the case for volume and EQ control without a phone. However, its in-ear design offers no environmental awareness, making it unsuitable for runners needing to hear traffic. Best for: Commuters and gym-goers seeking immersive audio and long battery life.
• KOUO Open Earbuds: Offers unique real-time translation across 70+ languages, an LCD display for calendar and payment codes, and an ergonomic clip-on design that leaves ears open. The trade-off is a shorter battery life of only 4–5 hours per charge and no active noise cancellation. Best for: Travelers, language learners, and safety-conscious users who need to stay aware of their surroundings.
The QJF M28 is engineered for people who want their music to be the only thing they hear. Its standout feature is the combination of Active Noise Cancellation and a massive 60-hour total battery life. You get six hours of continuous playback from a single charge, which extends to 60 hours when paired with the charging case. This makes it an ideal companion for long-haul flights, multi-day road trips, or marathon gym sessions where finding a power outlet isn't always an option. The Bluetooth 5.4 connectivity ensures a stable link, so you won't experience dropouts during intense workouts or while commuting through busy city streets.
What really sets this model apart is the smart touch screen built directly into the charging case. Most earbuds require you to pull out your phone to adjust settings, but the QJF allows you to manage volume, switch songs, toggle noise cancellation, and even change EQ modes right from the case. It also includes a "find my earbuds" feature, which is a practical solution for anyone who has ever lost a bud in a couch cushion. The IPX5 waterproof rating means these can handle sweat and rain, making them robust enough for serious athletic use. The in-ear design with Thermoplastic Elastomer (TPE) material creates a secure seal that blocks out external distractions, delivering the deep bass response that audiophiles look for in a headset designed for immersion.
However, this product is not for everyone. Because it seals the ear canal completely, it isolates you from the world. If you are running outdoors or cycling in traffic, this isolation could be dangerous. Furthermore, while the sound quality is tuned for immersion, the lack of an open-air design means you cannot have a conversation without removing the buds. It is a device built for focus, not for social interaction while listening. If your priority is total audio isolation and endurance, this is the clear winner, but if you need to hear the world around you, you should skip this model entirely.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-29 · 7 min read · Independent comparison
The KOUO Open Earbuds take a completely different approach, prioritizing communication and awareness over isolation. These aren't just standard headphones; they are translation devices capable of handling over 70 languages in real time. Whether you are traveling abroad, studying a new language, or working with international colleagues, the ability to translate conversations instantly makes them a powerful tool. They support multiple modes, including headphone-phone free talk and simultaneous interpretation, which transforms how you interact with others. The open-ear design ensures that you remain fully aware of your surroundings, which is critical for safety during outdoor activities like jogging or walking in unfamiliar neighborhoods.
Another defining feature is the high-quality LCD touch screen integrated into the earbuds themselves. This screen displays more than just battery levels; it shows weather updates, controls your camera, manages your calendar, and even displays a payment QR code for quick transactions. This level of integration turns the headphones into a mini-computer accessory. The bio-carbon fiber dynamic drivers provide an immersive sound experience despite the open design, offering five distinct EQ modes ranging from Pop to Folk, plus a specific Game mode for low-latency audio. At just 5.1 grams per earbud, they are incredibly lightweight and comfortable for extended wear, ensuring they don't cause pressure or fatigue even after hours of use.
Despite these innovations, there are limitations to consider. The battery life is significantly lower than the QJF, offering only 4 to 5 hours of continuous music playback and 3 to 4 hours for calls. While fast charging helps, you will need to recharge more frequently if you plan on using them all day. Additionally, the absence of Active Noise Cancellation means you will hear background noise, which might be distracting in loud environments like a busy train station. They are also designed as clip-on buds rather than in-ear plugs, so they do not offer the same passive noise isolation as traditional models. This makes them perfect for safe, open environments but less suitable for those who need absolute silence.
• Best for Battery Life → QJF Earbuds. With 60 hours of total playtime versus 4–5 hours on a single charge for the KOUO, the QJF wins decisively for long trips.
• Best for Safety Awareness → KOUO Open Earbuds. The open-ear design lets you hear traffic and ambient sounds, whereas the QJF isolates you completely.
• Best for Deep Bass & Immersion → QJF Earbuds. The in-ear seal and ANC create a closed acoustic environment ideal for bass-heavy tracks and focused listening.
• Best for International Travel → KOUO Open Earbuds. The 70+ language real-time translation feature is a capability the QJF does not possess.
• Best for Smart Control Without Phone → QJF Earbuds. The case screen handles volume and EQ changes independently, though the KOUO has an LCD on the bud itself.
• Best for Water Resistance → QJF Earbuds. The IPX5 rating provides solid protection against sweat and rain, whereas water resistance specs for the KOUO are not highlighted in the data.
• Best for Conversation & Translation → KOUO Open Earbuds. Designed specifically for two-way communication and language learning scenarios.
• Best for Gaming → KOUO Open Earbuds. Includes a dedicated Game audio mode, while the QJF focuses on general entertainment and call clarity.
If I had to pick one pair of headphones for my daily routine, I would choose the QJF Earbuds. The sheer utility of the 60-hour battery life combined with the convenience of controlling volume and EQ from the case makes it a superior daily driver. The Active Noise Cancellation is a game-changer for blocking out office chatter or airplane engine noise, and the secure in-ear fit ensures they stay put during intense workouts. While the KOUO is fascinating for its translation capabilities, the limited battery life and lack of noise isolation make it feel like a niche gadget rather than a primary audio device. For anyone looking for a reliable, long-lasting wireless headset that delivers rich sound and blocks out the chaos of modern life, the QJF is the logical choice. However, if your primary goal is to find the best deep bass wireless headset for swimming that keeps you connected to the world, or if you need voice assistant open ear headphones for swimming to navigate foreign cities, the KOUO's unique features might sway you, though I personally value the endurance and isolation of the QJF more highly for general use.
While the QJF Earbuds carry an IPX5 waterproof rating suitable for sweat and heavy rain, neither product is explicitly certified as a full submersion swim-proof device for underwater use based on the provided specifications. The QJF is better suited for water-based sports due to its higher water resistance rating compared to the KOUO.
Yes, the KOUO Open Earbuds support real-time translation for over 70 languages and include an LCD screen for managing features like calendars and payments, allowing for some independent operation, though full functionality typically requires app pairing for the most complex translation tasks.
The QJF Earbuds offer 6 hours of playtime on a single charge with a total of 60 hours using the case, whereas the KOUO Open Earbuds provide 4 to 5 hours of continuous music playback per charge.
Yes, the QJF Earbuds feature a smart touch screen on the charging case that allows you to adjust volume, change songs, control noise cancellation, and select EQ modes directly without needing to access your smartphone.
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