If you want a durable, flexible headphone for deep water swimming with a massive music library and modern Bluetooth 5.3 connectivity, choose Soveign Waterproof Headphones; if you need a lightweight, open-ear design that keeps your ears completely unblocked for situational awareness during pool laps or shallow dives, choose MOSSANTFUL Bone Conduction Headphones•Workout.
• Soveign Waterproof Headphones: The biggest strength is its robust build with 360-degree bendability and a generous 32GB storage capacity paired with the latest Bluetooth 5.3 chip; the trade-off is a slightly more complex control scheme involving physical buttons rather than touch. This pick is ideal for serious swimmers who need long battery life and extensive local storage without relying on a phone.
• MOSSANTFUL Bone Conduction Headphones•Workout: The standout feature is its specialized open-ear architecture designed specifically to keep the ear canal clear for safety while submerged up to 3 meters; the limitation lies in the smaller 16GB internal memory and the older Bluetooth 5.0 standard which may be less efficient in high-interference environments. This option fits users who prioritize environmental awareness and a secure, soft silicone fit over maximum storage capacity.
The Soveign X7 model stands out immediately as a device built for endurance and versatility. Its construction features a unique ability to bend 360 degrees at any angle without breaking, thanks to premium materials used in the link section. This flexibility means you can adjust the band to sit comfortably on almost any head shape, whether you are wearing a swim cap or have a larger frame. The enclosure is made of plastic but coated in waterproof silicone, ensuring it can handle being worn deep underwater for extended periods.
For the user who travels frequently or hates carrying a phone while running or cycling, the 32GB internal memory is a game-changer. This capacity allows you to store over 6,000 songs directly on the device. You can switch seamlessly between MP3 mode and Bluetooth mode, meaning you don't need your smartphone tethered to you for every workout. Whether you are hiking, driving, or doing gym sessions, having that much onboard storage gives you total freedom. The device also features a one-button operation system with physical controls for volume and calls, which can be easier to use with wet hands than touch interfaces.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-24 · 6 min read · Independent comparison
However, this product is not for everyone. If you are looking for the absolute lightest weight possible or prefer a headset that sits entirely behind your neck without any forward pressure, the structural rigidity required for the 360-degree bend might feel different than other options. Additionally, while the Bluetooth 5.3 technology offers faster transmission speeds and lower energy consumption, you must remember that Bluetooth signals are limited when you are actually underwater; you will need to switch to MP3 mode for swimming. It is best suited for adults who want a rugged, all-in-one media player that doubles as a high-performance swimming accessory.
The MOSSANTFUL K7 is engineered with a very specific philosophy: safety through situational awareness. Its open-ear design does not block the ear canal at all. Instead, it uses vibration to conduct sound directly to the inner ear. This design choice ensures that while you are listening to music or podcasts, you remain fully aware of your surroundings. This is particularly crucial for swimmers who need to hear lane markers, coaches, or other people in the water to avoid collisions. The device is meticulously crafted to withstand submersion up to 3 meters for 30 minutes, making it a reliable companion for both pool exercises and ocean swims.
Comfort is another major pillar of this product. Crafted from soft silicone, the headphones can bend 360 degrees to accommodate various head shapes, ensuring they stay securely in place without falling off during vigorous activity. Because the ear canal remains open, there is no feeling of "plugged" ears, which many users find uncomfortable during long sessions. The integration of Bluetooth 5.0 technology provides stable connections and faster transmission speeds compared to older generations, though it is slightly older than the latest standard found in some competitors.
This model is perfect for swimmers who prioritize safety and comfort over massive storage libraries. With 16GB of built-in memory, you can still enjoy your favorite tunes without a phone, supporting MP3 format playback effortlessly. However, the 16GB capacity holds significantly fewer tracks than the 32GB option found elsewhere, so you may need to curate your playlists more carefully. It is an excellent choice for those who want a lightweight, stable fit that feels like part of their skin rather than a piece of equipment strapped to their head.
• Best for deep storage capacity → Soveign Waterproof Headphones, offering 32GB (over 6,000 songs) versus the 16GB limit on the competitor.
• Best for modern connectivity speed → Soveign Waterproof Headphones, utilizing Bluetooth 5.3 for faster transmission and better stability.
• Best for open-ear safety awareness → MOSSANTFUL Bone Conduction Headphones•Workout, explicitly designed to leave the ear canal completely unblocked.
• Best for underwater durability specs → Both offer IPX8, but MOSSANTFUL explicitly states a rating for 3 meters depth for 30 minutes.
• Best for physical button control → Soveign Waterproof Headphones, featuring dedicated one-button operations for volume and calls.
• Best for soft silicone comfort → MOSSANTFUL Bone Conduction Headphones•Workout, emphasizing a gentle, skin-friendly material for long-term wear.
• Best for versatile outdoor use → Soveign Waterproof Headphones, suitable for cycling, running, and gym due to its robust 360-degree bendability.
• Best for budget-conscious buyers seeking value → Check current pricing on Amazon to see which fits your specific financial constraints, as neither has a price listed here.
In my opinion, I would choose the Soveign Waterproof Headphones for my own needs because the combination of Bluetooth 5.3 and 32GB of storage offers a level of independence that is hard to beat. The ability to carry thousands of songs without a phone and the flexibility to bend the device to any angle makes it incredibly practical for travel and intense workouts. While the MOSSANTFUL model excels at keeping ears open for safety, the Soveign's superior connectivity and massive memory make it the more versatile tool for daily life. That said, if you are specifically buying for kids with microphone capabilities or need a device where hearing the environment is the absolute top priority, the MOSSANTFUL open-ear design might be the safer bet. Ultimately, the Soveign wins on raw features and capacity.
Neither of these devices features active noise cancellation (ANC). They are bone conduction headphones designed to let external sounds in for safety. If you are looking for best noise canceling earphones that block out the world entirely, these models are not the right fit; however, they excel at letting you hear traffic or pool noises while listening to music.
You should check the product details on Amazon for exact runtime specifications, as battery life often depends on volume levels and whether you use Bluetooth or MP3 mode.
Yes, both the Soveign and MOSSANTFUL models carry an IPX8 waterproof rating. This means they are sealed with waterproof silicone and can be submerged in water for extended periods. Just remember to switch to MP3 mode for swimming, as Bluetooth signals do not travel well through water.
There is a distinct difference. The Soveign model comes with 32GB of internal memory, allowing you to store over 6,000 songs. In contrast, the MOSSANTFUL model includes 16GB of storage. If you have a large music library and hate syncing files frequently, the extra capacity in the Soveign unit is a major advantage.
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